A120469 Expansion of -(20*x^12 + 184*x^11 + 121*x^10 - 915*x^9 -1 524*x^8 - 132*x^7 + 1068*x^6 + 581*x^5 - 71*x^4 - 112*x^3 - 14*x^2 + 5*x +1) / ((3*x +1) * (16*x^12 + 140*x^11 + 2*x^10 - 968*x^9 - 830*x^8 + 946*x^7 + 982*x^6 - 239*x^5 - 351*x^4 - 5*x^3 + 39*x^2 + 3*x -1)).

1, 5, 34, 240, 1755, 12787, 93549, 683653, 4999040, 36546925, 267210674, 1953631757, 14283593763, 104431164565, 763525632740, 5582346722921, 40814089880858, 298403135454915, 2181708201960095, 15951074407242085

Offset

0,2

Links

Table of n, a(n) for n=0..19.

Index entries for linear recurrences with constant coefficients, signature (0,48,112,-366,-1292,265,3892,2008,-3458,-2902,146,436,48).

Formula

G.f.: -(20*x^12 + 184*x^11 + 121*x^10 - 915*x^9 -1 524*x^8 - 132*x^7 + 1068*x^6 + 581*x^5 - 71*x^4 - 112*x^3 - 14*x^2 + 5*x +1) / ((3*x +1) * (16*x^12 + 140*x^11 + 2*x^10 - 968*x^9 - 830*x^8 + 946*x^7 + 982*x^6 - 239*x^5 - 351*x^4 - 5*x^3 + 39*x^2 + 3*x -1)). - Colin Barker, May 17 2013

Crossrefs

Sequence in context: A291027 A033889 A334608 * A180909 A183415 A066559

Adjacent sequences: A120466 A120467 A120468 * A120470 A120471 A120472

Keyword

nonn,easy,less

Author

Roger L. Bagula and Gary W. Adamson, Jul 04 2006

Status

approved