id:A139469 - OEIS Search Results

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a(n)=sum{k=0..n, C(n,3k+2)^2}.

+0
3

0, 0, 1, 9, 36, 101, 261, 882, 3921, 17253, 67554, 243695, 876789, 3324906, 13166791, 52301709, 203824548, 782913717, 3010327497, 11695756698, 45823049817, 179787741723, 703527078258, 2747647985241, 10739885115573, 42082084255050, 165225573240651 (list; graph; listen)

	OFFSET	`0,4`
	CROSSREFS	`Cf. A119363, A139468.` `Sequence in context: A000537 A114286 A098928 this_sequence A103158 A023872 A034557` `Adjacent sequences: A139466 A139467 A139468 this_sequence A139470 A139471 A139472`
	KEYWORD	`nonn`
	AUTHOR	`N. J. A. Sloane (njas(AT)research.att.com), Jun 12 2008`

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Last modified December 18 21:37 EST 2009. Contains 171024 sequences.

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