A087124 - OEIS

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A087124

Fib(n)+Fib(2n+1).

1, 3, 6, 15, 37, 94, 241, 623, 1618, 4215, 11001, 28746, 75169, 196651, 514606, 1346879, 3525565, 9229062, 24160401, 63250167, 165586906, 433505383, 1134920881, 2971243730, 7778788417, 20365086099, 53316412566, 139584058863 (list; graph; refs; listen; history; internal format)

	OFFSET	`0,2`
	COMMENTS	`Binomial transform of A087123.` `For n>=1, a(n) is the coefficient of x in the reduction by x^2->x+1 of the polynomial 1+x^n+x^(2n+1). For an introduction to reductions of polynomials by substitutions such as x^2->x+1, see A192232. [From Clark Kimberling, July 1 2011]`
	CROSSREFS	`Cf. A000045.` `Sequence in context: A099323 A058534 A063778 * A086326 A098701 A152799` `Adjacent sequences: A087121 A087122 A087123 * A087125 A087126 A087127`
	KEYWORD	`easy,nonn`
	AUTHOR	`Paul Barry (pbarry(AT)wit.ie), Aug 15 2003`

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Last modified February 17 00:09 EST 2012. Contains 205978 sequences.