A140289 - OEIS

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A140289

First quadrisection of A140287.

0, 0, 1, -7, 32, -120, 401, -1247, 3712, -10800, 31201, -90487, 264992, -784680, 2345201, -7051727, 21263872, -64145760, 193310401, -581652967, 1747480352, -5243918040, 15725054801, -47140982207, 141319714432, -423717125520, 1270699466401, -3811500847447, 11434371886112, -34305580792200, 102927256193201, -308811498176687

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OFFSET

0,4

LINKS

Table of n, a(n) for n=0..31.

Index entries for linear recurrences with constant coefficients, signature (-7,-17,-15).

FORMULA

a(n)=-7a(n-1)-17a(n-2)-15a(n-3).

G.f.: x^2/((3*x + 1)*(5*x^2 + 4*x + 1)). - Colin Barker, Jul 10 2012

MATHEMATICA

LinearRecurrence[{-7, -17, -15}, {0, 0, 1}, 40] (* Harvey P. Dale, Mar 16 2015 *)

CROSSREFS