id:A026735 - OEIS Search Results

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Sum{T(n-k,k)}, 0<=k<=[ n/2 ], T given by A026725.

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1, 1, 2, 3, 6, 9, 15, 28, 43, 71, 130, 201, 331, 597, 928, 1525, 2720, 4245, 6965, 12315, 19280, 31595, 55472, 87067, 142539, 248802, 391341, 640143, 1111864, 1752007, 2863871, 4953162, 7817033, 12770195, 22004810, 34775005, 56779815 (list; graph; listen)

	OFFSET	`0,3`
	FORMULA	`Conjecture: G.f.:-1/2(2x^6-5x^4+8x^3+x-2+x(x-1)(x^2+x+1)(1-4x^3)^(1/2))/(x^6+4*x^3-1)/(x^2+x-1) [From Maksym Voznyy (voznyy(AT)mail.ru), Aug 11 2009]`
	CROSSREFS	`Sequence in context: A080239 A018158 A057928 this_sequence A006868 A067435 A035494` `Adjacent sequences: A026732 A026733 A026734 this_sequence A026736 A026737 A026738`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified December 10 00:48 EST 2009. Contains 170565 sequences.

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