id:A049855 - 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
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2, 3, 3, 5, 10, 18, 31, 54, 95, 167, 293, 514, 902, 1583, 2778, 4875, 8555, 15013, 26346, 46234, 81135, 142382, 249863, 438479, 769477, 1350338, 2369678, 4158495, 7297650, 12806483, 22473811, 39438789, 69210250, 121455522 (list; graph; listen)

	OFFSET	`0,1`
	FORMULA	`a(n)=2*a(n-1)-a(n-2)+a(n-3); 3 initial terms required.`
	CROSSREFS	`Sequence in context: A065460 A001180 A019460 this_sequence A064339 A053199 A045626` `Adjacent sequences: A049852 A049853 A049854 this_sequence A049856 A049857 A049858`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified July 8 18:40 EDT 2008. Contains 141013 sequences.

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