Class number problem for imaginary quadratic fields

Class, CLASS, Economy class, Social class, C-class cruiser, Class discrimination, Lerici-class minehunter, Working class, Upper class, Middle class, Fiji-class cruiser, Class (computer programming), American middle class, Polar Class, Class action, Gleaves-class destroyer, Ship class, Class consciousness, DR Class 130 family, Class F, Lekiu-class frigate, Hamilton-class cutter, N class, Halifax-class frigate, British U-class submarine, American Flower-class corvette, Kidd-class destroyer, Railroad classes, Seawolf-class submarine, Virginia-class submarine, Condottieri-class cruiser, Visakhapatnam-class destroyer, Destiny-class cruise ship, Lower middle class, Auk-class minesweeper, Province class, Calypso class, Marxian class theory, Social class in the United States, Borei-class submarine, Business class

Class struggle, Astute-class submarine, A class, Ohio-class submarine, Ruling class, MHC class II, Skipjack-class submarine, Kuma-class cruiser, Adjutant-class minesweeper, Accentor-class minesweeper, Character class, Upper middle class, Hébé-class frigate, Plunger-class submarine, Lupo-class frigate, Java class file, Brooklyn-class cruiser, Tripartite-class minehunter, Moudge-class frigate, City class, Charles F. Adams-class destroyer, Paulding-class destroyer, Gearing-class destroyer, T class, Shchuka-class submarine, Wickes-class destroyer, S-class ferry, J class, Gato-class submarine, Trafalgar-class submarine, Class stratification, Brahmaputra-class frigate, Barbel-class submarine, Alvand-class frigate, Complexity class, Grand-class cruise ship, Permit-class submarine, Lower class, Class analysis, Noun class, M class, Travel class, U class, MGWR Class L, Brooke-class frigate, Social class in the United Kingdom, V class, Working class in the United States, Echo-class submarine, P class

Class, CLASS, Economy class, Social class, C-class cruiser, Class discrimination, Lerici-class minehunter, Working class, Upper class, Middle class, Fiji-class cruiser, Class (computer programming), American middle class, Polar Class, Class action, Gleaves-class destroyer, Ship class, Class consciousness, DR Class 130 family, Class F, Lekiu-class frigate, Hamilton-class cutter, N class, Halifax-class frigate, British U-class submarine, American Flower-class corvette, Kidd-class destroyer, Railroad classes, Seawolf-class submarine, Virginia-class submarine, Condottieri-class cruiser, Visakhapatnam-class destroyer, Destiny-class cruise ship, Lower middle class, Auk-class minesweeper, Province class, Calypso class, Marxian class theory, Social class in the United States, Borei-class submarine, Business class, Class struggle, Astute-class submarine, A class, Ohio-class submarine, Ruling class, MHC class II, Skipjack-class submarine, Kuma-class cruiser, Adjutant-class minesweeper, Accentor-class minesweeper, Character class, Upper middle class, Hébé-class frigate, Plunger-class submarine, Lupo-class frigate, Java class file, Brooklyn-class cruiser, Tripartite-class minehunter, Moudge-class frigate, City class, Charles F. Adams-class destroyer, Paulding-class destroyer, Gearing-class destroyer, T class, Shchuka-class submarine, Wickes-class destroyer, S-class ferry, J class, Gato-class submarine, Trafalgar-class submarine, Class stratification, Brahmaputra-class frigate, Barbel-class submarine, Alvand-class frigate, Complexity class, Grand-class cruise ship, Permit-class submarine, Lower class, Class analysis, Noun class, M class, Travel class, U class, MGWR Class L, Brooke-class frigate, Social class in the United Kingdom, V class, Working class in the United States, Echo-class submarine, P class, Valour-class frigate, Benjamin Franklin-class submarine, Gawron-class corvette, X class, Class of Heroes, Kasturi-class corvette, Aditya-class auxiliary ship, Baltimore-class cruiser, Romeo-class submarine, Natick-class tugboat, Östergötland-class destroyer, Inner class, Inhaúma-class corvette, Knox-class frigate, Sōryū-class submarine, R class, Leahy-class cruiser, O class, Second class, Pierre Radisson-class icebreaker, Bogue-class escort carrier, Agosta-class submarine, Castle class, No.13-class submarine chaser, County-class cruiser, H class, NBR N class, Tambor-class submarine, G class, Yasen-class submarine, Heroine-class submarine, K class, Daphné-class submarine, Town class, W and Z-class destroyer, A-class submarine (1903), Professional–managerial class, Apollo-class cruiser, Talwar-class frigate, Alaska-class cruiser, NBR K Class, Tarawa-class amphibious assault ship, Q class, USATC S160 Class, Hatsuyuki-class destroyer, Nelson class, GWR 4100 Class, C-class destroyer (1943), Mexican-American middle class, Town-class cruiser (1936), C++ classes, Iroquois-class destroyer, Omaha-class cruiser, Flower-class corvette, L class, Elementary class, Godavari-class frigate, Ticonderoga-class cruiser, O and P-class destroyer, Myōkō-class cruiser