A025257 - OEIS

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A025257

(1/3)*s(n+3), where s = A025256.

1, 2, 6, 14, 35, 97, 264, 727, 2059, 5876, 16893, 49085, 143639, 422764, 1251642, 3724276, 11129680, 33393998, 100560903, 303812039, 920617337, 2797335154, 8521230447, 26017690537, 79610304979, 244082395820, 749739211746, 2306942230064 (list; graph; refs; listen; history; internal format)

	OFFSET	`1,2`
	FORMULA	`G.f.: (1-x-x^2-6x^3-sqrt(1-2x-x^2-10*x^3+x^4))/x^3/6. - Vladeta Jovovic (vladeta(AT)eunet.rs), May 07 2003`
	CROSSREFS	`Sequence in context: A177790 A105635 A178320 * A110152 A175654 A017922` `Adjacent sequences: A025254 A025255 A025256 * A025258 A025259 A025260`
	KEYWORD	`nonn`
	AUTHOR	`Clark Kimberling (ck6(AT)evansville.edu)`

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Last modified February 17 08:39 EST 2012. Contains 205998 sequences.