id:A049853 - OEIS Search Results

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

+0
3

1, 2, 2, 3, 6, 11, 19, 33, 58, 102, 179, 314, 551, 967, 1697, 2978, 5226, 9171, 16094, 28243, 49563, 86977, 152634, 267854, 470051, 824882, 1447567, 2540303, 4457921, 7823106, 13728594, 24092003, 42278518, 74193627 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=2*a(n-1)-a(n-2)+a(n-3); 3 initial terms required.`
	CROSSREFS	`Sequence in context: A137216 A070550 A102762 this_sequence A064319 A064674 A095902` `Adjacent sequences: A049850 A049851 A049852 this_sequence A049854 A049855 A049856`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 26 13:41 EDT 2008. Contains 142293 sequences.

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