id:A135582 - OEIS Search Results

Search: id:A135582

Displaying 1-1 of 1 results found.

page 1

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

+0
1

1, 1, 4, 7, 18, 39, 95, 232, 606, 1663, 4839, 14807, 47330, 156611, 532308, 1846622, 6507103, 23210020, 83590477, 303425693, 1108650850, 4073443378, 15039391464, 55763147423, 207543422052, 775082175863, 2903508757053, 10907257755616 (list; graph; listen)

	OFFSET	`0,3`
	COMMENT	`Diagonal sums of the Jacobsthal-Catalan triangle A139377.`
	FORMULA	`a(n)=sum{k=0..n, J(k+1)*A132364(n-k)} where J(n)=A001045(n), Jacobsthal numbers.`
	CROSSREFS	`Sequence in context: A146387 A124400 A077920 this_sequence A100828 A132207 A097537` `Adjacent sequences: A135579 A135580 A135581 this_sequence A135583 A135584 A135585`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Apr 15 2008`

page 1

Search completed in 0.002 seconds

Last modified November 25 14:49 EST 2009. Contains 167514 sequences.

AT&T Labs Research