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A176726
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Numerator of a-sequence for Sheffer triangle A060081.
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4
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1, 0, -2, 0, -32, 0, -704, 0, -54784, 0, -2610176, 0, -10976325632, 0, -52971659264, 0, -179326416191488, 0, -24309257264168960, 0, -69389116291423404032, 0, -8404514249426618810368, 0, -81520321871322828385550336, 0, -438807077783516207378333696, 0, -690781531822985516802849636352
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OFFSET
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0,3
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COMMENTS
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The denominator sequence is A176727.
For a- and z-sequences for Sheffer triangles see the W. Lang link under A006232.
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LINKS
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Table of n, a(n) for n=0..28.
W. Lang: Rationals A176726/A176727.
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FORMULA
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E.g.f. for rational a-sequence A176726/A176727: x/ln(sqrt((1+x)/(1- x))).
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EXAMPLE
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Rationals A176726(n)/A176727(n): [1, 0, -2/3, 0, -32/15, 0, -704/21,0,...].
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CROSSREFS
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A176728/A176729 z-sequence for triangle A060081.
Sequence in context: A086487 A071147 A156481 * A156452 A156473 A156504
Adjacent sequences: A176723 A176724 A176725 * A176727 A176728 A176729
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KEYWORD
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sign,easy,frac
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AUTHOR
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Wolfdieter Lang, Jul 14 2010
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STATUS
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approved
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