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Search: id:A161361
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| 1, 372, 29250, -134120, 54261375, -6139293372, 854279148734, -128813964933000, 20657907916144515, -3469030105750871000, 603760629237519966018, -108124880417607682194048, 19820541224206810447813500
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Triangle A161362 = the corresponding convolution triangle with row sums = A000521.
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FORMULA
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Given A000521: (j = 1/q + 744 + 196884q + 21493760q^2 + 864299970q^3 + ...); multiply by q and take the convolution square root.
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EXAMPLE
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a(2) = 29250 = 1/2 * (A000521(2) - 372^2) = 1/2 * (196884 - 138384) = 29250.
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CROSSREFS
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Cf. A000521, A161362
Sequence in context: A051182 A161362 A004021 this_sequence A139659 A142395 A142921
Adjacent sequences: A161358 A161359 A161360 this_sequence A161362 A161363 A161364
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KEYWORD
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sign
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AUTHOR
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Gary W. Adamson (qntmpkt(AT)yahoo.com), Jun 07 2009
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EXTENSIONS
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More terms from R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jun 15 2009
Keyword:sign introduced by R. J. Mathar (mathar(AT)strw.leidenuniv.nl), Jul 07 2009
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