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A046012
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Discriminants of imaginary quadratic fields with class number 15 (negated).
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4
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239, 439, 751, 971, 1259, 1327, 1427, 1567, 1619, 2243, 2647, 2699, 2843, 3331, 3571, 3803, 4099, 4219, 5003, 5227, 5323, 5563, 5827, 5987, 6067, 6091, 6211, 6571, 7219, 7459, 7547, 8467, 8707, 8779, 9043, 9907, 10243, 10267, 10459, 10651
(list; graph; refs; listen; history; internal format)
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OFFSET
| 1,1
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REFERENCES
| Buell, D. A. ``Small Class Numbers and Extreme Values of L-Functions of Quadratic Fields.'' Math. Comput. 139, 786-796, 1977.
Wagner, C. ``Class Number 5, 6 and 7.'' Math. Comput. 65, 785-800, 1996.
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LINKS
| R. J. Mathar, Table of n, a(n) for n=1..68.
S. Arno, M. L. Robinson and F. S. Wheller, Imaginary Quadratic Fields with Small Odd Class Number
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
Index entries for sequences related to quadratic fields
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CROSSREFS
| Cf. A006203, A013658, A014602, A014603, A046002-A046020.
Sequence in context: A013473 A140032 A056086 * A152952 A142356 A142557
Adjacent sequences: A046009 A046010 A046011 * A046013 A046014 A046015
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KEYWORD
| nonn,fini
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AUTHOR
| Eric Weisstein (eric(AT)weisstein.com)
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EXTENSIONS
| 68 discriminants in this sequence (proved).
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