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A002613
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Glaisher's function J(n) (18 squares version).
(Formerly M5284 N2300)
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1
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1, 44, 432, -1136, 610, -5568, 6048, 11456, -3423, 26840, -79920, 768, -5470, -77952, 263520, 61696, 73090, -150612, -84240, -692960, -139776, 1030080, -1025568, 1410048, -18525, -240680, 1355616, 10752, -128222, -3396480, -293760
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listen;
history;
text;
internal format)
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OFFSET
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1,2
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COMMENTS
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It would be nice to have a q-series that generates this sequence. Glaisher gives many formulas but they are difficult to follow.
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REFERENCES
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J. W. L. Glaisher, On the representation of a number as sum of 18 squares, Quart. J. Math. 38 (1907), 289-351 (see p. 329). [The whole 1907 volume of The Quarterly Journal of Pure and Applied Mathematics, volume 38, is freely available from Google Books]
N. J. A. Sloane, A Handbook of Integer Sequences, Academic Press, 1973 (includes this sequence).
N. J. A. Sloane and Simon Plouffe, The Encyclopedia of Integer Sequences, Academic Press, 1995 (includes this sequence).
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LINKS
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FORMULA
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CROSSREFS
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KEYWORD
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sign
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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