A025812 Expansion of 1/((1-x^2)*(1-x^5)*(1-x^12)).

1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 3, 1, 3, 2, 3, 3, 3, 3, 4, 3, 5, 3, 6, 4, 6, 5, 6, 6, 7, 6, 8, 6, 9, 7, 10, 8, 10, 9, 11, 10, 12, 10, 13, 11, 14, 12, 15, 13, 16, 14, 17, 15, 18, 16, 19, 17, 20, 18, 22, 19, 23, 20, 24, 22, 25

Offset

0,11

Links

Table of n, a(n) for n=0..66.

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

Mathematica

CoefficientList[Series[1/((1-x^2)(1-x^5)(1-x^12)), {x, 0, 70}], x] (* or *) LinearRecurrence[{0, 1, 0, 0, 1, 0, -1, 0, 0, 0, 0, 1, 0, -1, 0, 0, -1, 0, 1}, {1, 0, 1, 0, 1, 1, 1, 1, 1, 1, 2, 1, 3, 1, 3, 2, 3, 3, 3}, 70] (* Harvey P. Dale, Mar 26 2018 *)

Prog

(PARI) Vec(1/((1-x^2)*(1-x^5)*(1-x^12)) + O(x^75)) \\ Jinyuan Wang, Feb 28 2020

Crossrefs

Sequence in context: A344462 A321887 A046051 * A263001 A109698 A029231

Adjacent sequences: A025809 A025810 A025811 * A025813 A025814 A025815

Keyword

nonn

Author

N. J. A. Sloane

Status

approved