id:A049861 - 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.

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0, 2, 3, 5, 8, 15, 28, 53, 99, 185, 345, 644, 1202, 2244, 4189, 7820, 14598, 27251, 50871, 94964, 177275, 330930, 617767, 1153223, 2152791, 4018745, 7502034, 14004500, 26143046, 48802803, 91103140, 170067734, 317475711 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`a(n)=2*a(n-1)-a(n-3)+a(n-4); 4 initial terms required.`
	CROSSREFS	`Sequence in context: A101172 A006544 A110536 this_sequence A130476 A096592 A050295` `Adjacent sequences: A049858 A049859 A049860 this_sequence A049862 A049863 A049864`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified August 19 23:53 EDT 2008. Contains 142930 sequences.

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