id:A049859 - 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
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0, 1, 3, 4, 7, 12, 23, 43, 81, 151, 282, 526, 982, 1833, 3422, 6388, 11925, 22261, 41556, 77575, 144814, 270333, 504647, 942055, 1758591, 3282868, 6128328, 11440120, 21355963, 39866466, 74421140, 138926437, 259342371, 484130068 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`a(n)=2*a(n-1)-a(n-3)+a(n-4); 4 initial terms required.`
	CROSSREFS	`Sequence in context: A050342 A108700 A062202 this_sequence A124636 A049930 A102938` `Adjacent sequences: A049856 A049857 A049858 this_sequence A049860 A049861 A049862`
	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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