A120465 - OEIS

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A120465

a(0)=1, a(1)=36, a(n)=204*a(n-2).

1, 36, 204, 7344, 41616, 1498176, 8489664, 305627904, 1731891456, 62348092416, 353305857024, 12719010852864, 72074394832896, 2594678213984256, 14703176545910784, 529314355652788224, 2999448015365799936

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OFFSET

0,2

LINKS

Table of n, a(n) for n=0..16.

Index entries for linear recurrences with constant coefficients, signature (0,204).

FORMULA

G.f.: (36x+1)/(1-204x^2). - Harvey P. Dale, Nov 14 2021

MATHEMATICA

LinearRecurrence[{0, 204}, {1, 36}, 20] (* Harvey P. Dale, Nov 14 2021 *)

PROG

(PARI) Vec((1+36*x)/(1-204*x^2)+O(x^66))

CROSSREFS

Sequence in context: A017138 A339981 A304378 * A361209 A144523 A232677

Adjacent sequences: A120462 A120463 A120464 * A120466 A120467 A120468

KEYWORD

nonn,easy

AUTHOR

Roger L. Bagula, Jul 02 2006

EXTENSIONS

Edited by N. J. A. Sloane, Dec 04 2006

STATUS

approved