id:A024743 - 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 ].

+0
2

3, 1, 2, 6, 18, 54, 174, 558, 1782, 5694, 19170, 64206, 214050, 712566, 2465694, 8480310, 29012526, 99157446, 348577698, 1219546278, 4248000882, 14773851366, 52521676254, 185880813822, 655167175446, 2306629089486, 8261570136834, 29484704469390 (list; graph; listen)

	OFFSET	`1,1`
	CROSSREFS	`Sequence in context: A049917 A166197 A010279 this_sequence A024963 A134348 A074305` `Adjacent sequences: A024740 A024741 A024742 this_sequence A024744 A024745 A024746`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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

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