A132364 - OEIS

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A132364

Expansion of 1/(1-x^2*c(x)), c(x) the g.f. of A000108 .

1, 0, 1, 1, 3, 7, 20, 59, 184, 593, 1964, 6642, 22845, 79667, 281037, 1001092, 3595865, 13009673, 47366251, 173415176, 638044203, 2357941142, 8748646386, 32576869203, 121701491701, 456012458965, 1713339737086 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,5`
	COMMENTS	`Diagonal sums of A106566 .`
	FORMULA	`a(0)=1, a(n)=sum{k=0..floor(n/2), (k/(n-k))*C(2n-3k-1,n-2k)), n>0 .`
	CROSSREFS	`Cf. A030238.` `Sequence in context: A129429 A084204 A030238 * A110490 A132868 A056783` `Adjacent sequences: A132361 A132362 A132363 * A132365 A132366 A132367`
	KEYWORD	`nonn`
	AUTHOR	`Philippe DELEHAM (kolotoko(AT)wanadoo.fr), Nov 08 2007`
	EXTENSIONS	`Typo in a(n) term corrected Johannes W. Meijer (meijgia(AT)hotmail.com), Sep 13 2010`

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Last modified February 14 17:34 EST 2012. Contains 205644 sequences.