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Search: id:A132869
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| A132869 |
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Expansion of 1/(1-8x*c(9x)), where c(x) is the g.f. of A000108 . |
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+0
3
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| 1, 8, 136, 2960, 73000, 1941488, 54308944, 1575042848, 46933604200, 1428339725360, 44208223638256, 1387283904693728, 44037051952177936, 1411537432519587680, 45622957237070603680, 1485278571381185936960
(list; graph; listen)
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OFFSET
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0,2
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FORMULA
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a(n)=Sum_{k, 0<=k<=n}A039599(n,k)*(-1)^k*9^(n-k). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 11 2007
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MAPLE
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c:=proc(x) options operator, arrow: (1/2-(1/2)*sqrt(1-4*x))/x end proc: G:=1/(1-8*x*c(9*x)): Gser:=series(G, x=0, 20): seq(coeff(Gser, x, n), n=0..16); - Emeric Deutsch (deutsch(AT)duke.poly.edu), Dec 20 2007
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CROSSREFS
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Sequence in context: A069988 A072072 A131927 this_sequence A036915 A049211 A024283
Adjacent sequences: A132866 A132867 A132868 this_sequence A132870 A132871 A132872
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KEYWORD
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nonn
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 18 2007
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EXTENSIONS
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More terms from Emeric Deutsch (deutsch(AT)duke.poly.edu), Dec 20 2007
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