id:A113284 - OEIS Search Results

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Odd bisection of A113281: a(n) = A113281(2*n+1).

+0
5

1, 5, 23, 113, 579, 3047, 16319, 88489, 484255, 2668951, 14793169, 82372723, 460436551, 2582033519, 14519686915, 81845419777, 462319557311, 2616334071987, 14830559353869, 84189874112659, 478559722392493 (list; graph; listen)

	OFFSET	`0,2`
	FORMULA	`G.f.: ( (1+x)/(1-x)/(1-6x+x^2)(1-x-(1-6*x+x^2)^(1/2))/2/x )^(1/2).`
	PROGRAM	`(PARI) {a(n)=local(x=X+XO(X^n)); polcoeff( (2(1+x)/(1-x)/(1-6x+x^2)/(1-x+(1-6x+x^2)^(1/2)) )^(1/2), n, X)}`
	CROSSREFS	`Cf. A113281, A113282, A113283.` `Sequence in context: A109877 A017974 A017975 this_sequence A104090 A073596 A167248` `Adjacent sequences: A113281 A113282 A113283 this_sequence A113285 A113286 A113287`
	KEYWORD	`nonn`
	AUTHOR	`Paul D. Hanna (pauldhanna(AT)juno.com), Oct 22 2005`

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Last modified December 10 12:37 EST 2009. Contains 170569 sequences.

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