id:A108308 - OEIS Search Results

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

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2

1, 0, 1, 2, 9, 44, 245, 1462, 9157, 59368, 395033, 2682282, 18510561, 129451492, 915401757, 6534282398, 47020440413, 340733200288, 2484299720065, 18211441554706, 134145473550009, 992385470273692, 7370066147881413 (list; graph; listen)

	OFFSET	`0,4`
	COMMENT	`Diagonal sums of A110510.`
	FORMULA	`a(0)=1, a(n)=sum{k=0..floor(n/2), (k/(n-k))C(2n-3k-1, n-2k)2^(n-2k)}, n>0`
	CROSSREFS	`Sequence in context: A162356 A026302 A124889 this_sequence A119855 A047119 A052881` `Adjacent sequences: A108305 A108306 A108307 this_sequence A108309 A108310 A108311`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Jul 24 2005`

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

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