id:A024731 - 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, 6, 6, 6, 6, 42, 78, 114, 366, 870, 1806, 4470, 10374, 26682, 63510, 151962, 375414, 936294, 2295078, 5570214, 13729974, 35174202, 87526302, 215709522, 540037374, 1388390982, 3485855310, 8700035046, 21930804870, 56696874954, 143383060518 (list; graph; listen)

	OFFSET	`1,3`
	CROSSREFS	`Adjacent sequences: A024728 A024729 A024730 this_sequence A024732 A024733 A024734` `Sequence in context: A092937 A116571 A054641 this_sequence A098537 A131703 A135357`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified October 11 13:47 EDT 2008. Contains 144830 sequences.

AT&T Labs Research