A029226 Expansion of 1/((1-x^2)(1-x^7)(1-x^8)(1-x^9)).

1, 0, 1, 0, 1, 0, 1, 1, 2, 2, 2, 2, 2, 2, 3, 3, 5, 4, 6, 4, 6, 5, 7, 7, 9, 9, 10, 10, 11, 11, 13, 13, 16, 15, 18, 17, 20, 19, 22, 22, 25, 25, 28, 28, 31, 31, 34, 34, 38, 38, 42, 42, 46, 46, 50, 50, 55, 55, 60, 60, 65, 65, 70

Offset

0,9

Comments

Number of partitions of n into parts 2, 7, 8, and 9. - Vincenzo Librandi, Jun 02 2014

Links

Vincenzo Librandi, Table of n, a(n) for n = 0..1000

Index entries for linear recurrences with constant coefficients, signature (0,1,0,0,0,0,1,1,0,-1,-1,0,0,0,-1,-1,0,1,1,0,0,0,0,1,0,-1).

Mathematica

CoefficientList[Series[1/((1 - x^2) (1 - x^7) (1 - x^8) (1 -x^9)), {x, 0, 100}], x] (* Vincenzo Librandi, Jun 02 2014 *)

Prog

(PARI) Vec(1/((1-x^2)*(1-x^7)*(1-x^8)*(1-x^9)) + O(x^80)) \\ Jinyuan Wang, Mar 15 2020

Crossrefs

Sequence in context: A035466 A122521 A086394 * A093354 A374032 A317245

Adjacent sequences: A029223 A029224 A029225 * A029227 A029228 A029229

Keyword

nonn,easy

Author

N. J. A. Sloane

Status

approved