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Search: id:A001939
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| A001939 |
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Absolute value of coefficients of an elliptic function.
(Formerly M3898 N1599)
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+0
1
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| 1, 5, 20, 65, 185, 481, 1165, 2665, 5820, 12220, 24802, 48880, 93865, 176125, 323685, 583798, 1035060, 1806600, 3108085, 5276305, 8846884, 14663645, 24044285, 39029560
(list; graph; listen)
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OFFSET
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0,2
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REFERENCES
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A. Cayley, A memoir on the transformation of elliptic functions, Collected Mathematical Papers. Vols. 1-13, Cambridge Univ. Press, London, 1889-1897, Vol. 9, p. 128.
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FORMULA
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G.f.: Product (1 - x^k)^-c(k), c(k) = 5, 5, 5, 0, 5, 5, 5, 0, ....
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CROSSREFS
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Sequence in context: A038165 A032340 A011854 this_sequence A100534 A023004 A001873
Adjacent sequences: A001936 A001937 A001938 this_sequence A001940 A001941 A001942
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KEYWORD
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nonn,easy
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AUTHOR
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njas, Simon Plouffe (plouffe(AT)math.uqam.ca)
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