A139379 - OEIS

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A139379

A Jacobsthal Catalan convolution.

0, 1, 2, 6, 15, 41, 113, 327, 982, 3066, 9892, 32820, 111390, 385042, 1350722, 4795246, 17191535, 62139697, 226167557, 828085651, 3047683955, 11267975677, 41829610607, 155848125601, 582566960465, 2184167358991, 8211247681373 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,3`
	COMMENTS	`Second column of A139377. Row sums of A139377 give a(n+1).`
	FORMULA	`G.f.: xc(x)/(1-x-2x^2), c(x) the g.f. of A000108; a(n)=sum{k=0..n, A000108(k)*A001045(n-k)};`
	CROSSREFS	`Sequence in context: A074446 A180666 A121328 * A065178 A178936 A148438` `Adjacent sequences: A139376 A139377 A139378 * A139380 A139381 A139382`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 15 2008`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.