A029031 - OEIS

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A029031

Expansion of 1/((1-x)(1-x^2)(1-x^11)(1-x^12)).

1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 9, 10, 12, 13, 15, 16, 18, 19, 21, 22, 25, 27, 31, 33, 37, 39, 43, 45, 49, 51, 55, 58, 63, 67, 73, 77, 83, 87, 93, 97, 103, 107, 114, 119, 127, 133, 142, 148, 157, 163, 172, 178, 187

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OFFSET

0,3

LINKS

Table of n, a(n) for n=0..54.

Index entries for linear recurrences with constant coefficients, signature (1,1,-1,0,0,0,0,0,0,0,1,0,-2,0,1,0,0,0,0,0,0,0,-1,1,1,-1).

MATHEMATICA

CoefficientList[Series[1/((1-x)(1-x^2)(1-x^11)(1-x^12)), {x, 0, 90}], x] (* Jinyuan Wang, Mar 24 2020 *)

LinearRecurrence[{1, 1, -1, 0, 0, 0, 0, 0, 0, 0, 1, 0, -2, 0, 1, 0, 0, 0, 0, 0, 0, 0, -1, 1, 1, -1}, {1, 1, 2, 2, 3, 3, 4, 4, 5, 5, 6, 7, 9, 10, 12, 13, 15, 16, 18, 19, 21, 22, 25, 27, 31, 33}, 90] (* Harvey P. Dale, Sep 06 2020 *)

CROSSREFS

Sequence in context: A025152 A026802 A185329 * A188666 A328090 A029156

Adjacent sequences: A029028 A029029 A029030 * A029032 A029033 A029034

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved