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Search: id:A132864
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| A132864 |
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Expansion of 1/(1-4x*c(5x)), where c(x) is the g.f. of A000108 . |
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3
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| 1, 4, 36, 424, 5716, 83544, 1288296, 20637264, 340116276, 5730014584, 98241641656, 1708602483504, 30070563388936, 534554579527024, 9584333758817616, 173120386421418144, 3147337611202622196
(list; graph; listen)
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OFFSET
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0,2
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COMMENT
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Hankel transform is A135420. [From Paul Barry (pbarry(AT)wit.ie), Sep 15 2009]
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FORMULA
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a(n)=Sum_{k, 0<=k<=n}A039599(n,k)*(-1)^k*5^(n-k). - Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Dec 11 2007
Integral representation: a(n)=(2/pi)*Int(x^n*sqrt(x(20-x))/(x(16+x)),x,0,20). [From Paul Barry (pbarry(AT)wit.ie), Sep 15 2009]
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CROSSREFS
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Adjacent sequences: A132861 A132862 A132863 this_sequence A132865 A132866 A132867
Sequence in context: A019999 A002894 A131765 this_sequence A052700 A136224 A009533
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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 added. Paul Barry (pbarry(AT)wit.ie), Sep 15 2009
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