id:A099560 - OEIS Search Results

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Sum C(n-2k,k-1), k=0..floor(n/3).

+0
3

0, 0, 0, 1, 1, 1, 3, 4, 5, 9, 13, 18, 28, 41, 59, 88, 129, 188, 277, 406, 594, 872, 1278, 1872, 2745, 4023, 5895, 8641, 12664, 18559, 27201, 39865, 58424, 85626, 125491, 183915, 269542, 395033, 578948, 848491, 1243524, 1822472, 2670964, 3914488 (list; graph; listen)

	OFFSET	`0,7`
	FORMULA	`G.f.: x^3/((1-x^3)(1-x-x^3)); a(n)=a(n-1)+2a(n-3)-a(n-4)-a(n-6).`
	CROSSREFS	`Cf. A074331, A099561, A099562.` `Sequence in context: A080633 A026488 A136259 this_sequence A050161 A117125 A000692` `Adjacent sequences: A099557 A099558 A099559 this_sequence A099561 A099562 A099563`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Oct 22 2004`

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Last modified November 21 14:49 EST 2008. Contains 150807 sequences.

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