id:A024725 - OEIS Search Results

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a(n) = Sum (a(2i-1)*a(n-2i+1), i = 1,2,...,k), where k = [ (n+1)/4 ].

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1, 1, 3, 3, 3, 3, 12, 21, 30, 66, 138, 264, 525, 1029, 2271, 4620, 9291, 19335, 41430, 86556, 178689, 373854, 814269, 1726698, 3620550, 7688712, 16786875, 36952933, 76375821, 163325109, 358773663, 773646114, 1656489261, 3572265090, 7856043150, 17039803998 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A087575 A001270 A029630 this_sequence A095987 A098535 A069239` `Adjacent sequences: A024722 A024723 A024724 this_sequence A024726 A024727 A024728`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified September 5 19:27 EDT 2008. Contains 143485 sequences.

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