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Search: id:A094682
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| A094682 |
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Discriminants of integer positive ternary quadratic forms that are spinor regular but not regular. |
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+0
1
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| 64, 108, 108, 128, 256, 256, 324, 343, 432, 432, 432, 1024, 1024, 1024, 1372, 1728, 2048, 3888, 4096, 4096, 4096, 5488, 6912, 6912, 16384, 16384, 27648, 62208, 87808
(list; graph; listen)
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OFFSET
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1,1
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COMMENT
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List is believed to be complete.
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REFERENCES
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W. K. Chan and A. G. Earnest, Discriminant bounds for spinor regular ternary quadratic lattices. J. London Math. Soc. (2) 69 (2004), no. 3, 545-561.
W . C. Jagy, I. Kaplansky and A. Schiemann: There are 913 regular ternary forms. Mathematika 44(1997) 332-341.
A. Schiemann: Ternary positive definite quadratic forms are determined by their theta series. Math. Ann. 308(1997) 507-517
G. L. Watson: Integral Quadratic Forms (Cambridge, 1960).
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CROSSREFS
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Sequence in context: A118488 A088033 A039481 this_sequence A118158 A029777 A145464
Adjacent sequences: A094679 A094680 A094681 this_sequence A094683 A094684 A094685
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KEYWORD
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nonn,fini,full
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AUTHOR
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William Jagy (jagy(AT)msri.org), Jun 03 2004
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