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Search: id:A132373
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| A132373 |
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Expansion of c(6x^2)/(1-xc(6x^2)), where c(x) is the g.f. of A000108 . |
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1
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OFFSET
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0,3
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COMMENT
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Hankel transform is 6^C(n+1,2) . Series reversion of x(1+x)(1+2x+7x^2) .
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FORMULA
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a(n) = Sum_{k, 0<=k<=n}A120730(n,k)*6^(n-k).
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CROSSREFS
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Cf. A000012, A001405, A126087, A128386, A121724, A128387.
Adjacent sequences: A132370 A132371 A132372 this_sequence A132374 A132375 A132376
Sequence in context: A061521 A073220 A110455 this_sequence A110293 A039687 A001544
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KEYWORD
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easy,nonn
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AUTHOR
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Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 10 2007
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