id:A165203 - OEIS Search Results

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Expansion of (1+x)*c(x)^3/(1-xc(x)^3), c(x) the g.f. of A000108.

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1, 5, 20, 81, 332, 1372, 5702, 23793, 99576, 417664, 1754866, 7383204, 31096466, 131084954, 552969854, 2334012425, 9856336324, 41639407776, 175971686398, 743888534968, 3145439344550, 13302946909338, 56272308538682 (list; graph; listen)

	OFFSET	`0,2`
	COMMENT	`Hankel transform is A165204.`
	FORMULA	`G.f.: (1+x)((1-x)sqrt(1-4x)+5x-1)/(2(1-4x-x^2));` `a(n)=(A165201(n)-0^n)+A165201(n+1).`
	CROSSREFS	`Sequence in context: A003947 A033131 A022021 this_sequence A030520 A056884 A006749` `Adjacent sequences: A165200 A165201 A165202 this_sequence A165204 A165205 A165206`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Sep 07 2009`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

AT&T Labs Research