id:A026658 - OEIS Search Results

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Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026648.

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1, 1, 2, 4, 6, 11, 17, 30, 47, 86, 133, 242, 375, 679, 1054, 1914, 2968, 5389, 8357, 15166, 23523, 42698, 66221, 120204, 186425, 338381, 524806, 952592, 1477398, 2681683, 4159081, 7549278, 11708359, 21252226, 32960585, 59827870 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`G.f.: (-x^6+2x^5+x^4+2x^3+x+1)/(x^8-4x^6-x^4-2x^2+1).`
	CROSSREFS	`Sequence in context: A014217 A034297 A026636 this_sequence A138688 A131298 A007053` `Adjacent sequences: A026655 A026656 A026657 this_sequence A026659 A026660 A026661`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified November 25 20:09 EST 2009. Contains 167514 sequences.

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