id:A024729 - 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, 5, 5, 5, 5, 30, 55, 80, 230, 530, 1080, 2505, 5555, 13755, 31330, 71405, 168605, 403830, 947180, 2199905, 5189130, 12724755, 30313630, 71503880, 171244630, 421182405, 1012930055, 2420011955, 5834077855, 14434795655, 34963583830 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Sequence in context: A134701 A078097 A082476 this_sequence A046271 A046263 A092279` `Adjacent sequences: A024726 A024727 A024728 this_sequence A024730 A024731 A024732`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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