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Search: id:A051629
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| A051629 |
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Poincare series for Gamma_2(1,2). |
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+0
1
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| 1, 0, 0, 0, 2, 0, 2, 0, 4, 0, 5, 0, 9, 0, 9, 0, 15, 0, 17, 1, 23, 1, 27, 3, 36, 3, 39, 6, 51, 7, 57, 11, 69, 13, 78, 19, 94, 21, 102, 29, 122, 33, 134, 42, 154, 48, 170, 60, 195, 66, 210, 81, 240, 90, 260, 106, 290, 118, 315, 138, 351, 150, 375, 174, 417
(list; graph; listen)
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OFFSET
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0,5
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REFERENCES
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Kogiso, T. and Tsushima, K., On an algebra of Siegel modular forms associated with the theta group Gamma_2(1,2), Tsukuba J. Math. 22 (1998), 645-656.
B. Runge, Codes and Siegel modular forms, Discrete Math. 148 (1996), 175-204, p. 203, first displayed formula.
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MAPLE
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(1+x^6+x^8+x^10+x^19+x^21+x^23+x^29)/((1-x^4)^2*(1-x^6)*(1-x^12));
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CROSSREFS
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Sequence in context: A132952 A029187 A035385 this_sequence A052120 A029186 A072680
Adjacent sequences: A051626 A051627 A051628 this_sequence A051630 A051631 A051632
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KEYWORD
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nonn,nice,easy
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AUTHOR
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N. J. A. Sloane (njas(AT)research.att.com).
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