id:A049858 - OEIS Search Results

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a(n)=Sum{a(k): k=0,1,2,...,n-4,n-2,n-1}; a(n-3) is not a summand; 3 initial terms required.

+0
3

0, 1, 2, 3, 5, 9, 17, 32, 60, 112, 209, 390, 728, 1359, 2537, 4736, 8841, 16504, 30809, 57513, 107363, 200421, 374138, 698426, 1303794, 2433871, 4543454, 8481540, 15833003, 29556423, 55174760, 102998057, 192272694, 358927051 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=2*a(n-1)-a(n-3)+a(n-4); 4 initial terms required.`
	CROSSREFS	`Pairwise sums of A049856. Partial sums of A049864.` `Sequence in context: A054187 A014743 A080889 this_sequence A092483 A005257 A091697` `Adjacent sequences: A049855 A049856 A049857 this_sequence A049859 A049860 A049861`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 25 07:41 EDT 2008. Contains 142293 sequences.

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