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A162481 Expansion of (1/(1-x)^3)*c(x/(1-x)^3), c(x) the g.f. of A000108. +0
2
1, 4, 14, 54, 235, 1119, 5658, 29800, 161621, 896198, 5056824, 28938519, 167548937, 979653821, 5776252440, 34305807512, 205039491091, 1232333298174, 7443336041318, 45157243590384, 275051410542141, 1681362181696823 (list; graph; listen)
OFFSET

0,2

FORMULA

G.f.: 1/((1-x)^3-x-x^2/((1-x)^3-2x-x^2/((1-x)^3-2x-x^2/((1-x)^3-2x-x^2/(1-... (continued fraction);

a(n)=sum{k=0..n, C(n+2k+2,n-k)*A000108}.

CROSSREFS

Cf. A162482.

Sequence in context: A145211 A060898 A045501 this_sequence A088655 A149490 A143406

Adjacent sequences: A162478 A162479 A162480 this_sequence A162482 A162483 A162484

KEYWORD

easy,nonn

AUTHOR

Paul Barry (pbarry(AT)wit.ie), Jul 04 2009

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Last modified November 24 19:42 EST 2009. Contains 167435 sequences.


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