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A029171 Expansion of 1/((1-x^2)(1-x^4)(1-x^5)(1-x^6)). 0
1, 0, 1, 0, 2, 1, 3, 1, 4, 2, 6, 3, 8, 4, 10, 6, 13, 8, 16, 10, 20, 13, 24, 16, 29, 20, 34, 24, 40, 29, 47, 34, 54, 40, 62, 47, 71, 54, 80, 62, 91, 71, 102, 80, 114, 91, 127, 102, 141, 114, 156, 127, 172, 141, 189, 156 (list; graph; refs; listen; history; text; internal format)
OFFSET

0,5

LINKS

Table of n, a(n) for n=0..55.

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

FORMULA

a(0)=1, a(1)=0, a(2)=1, a(3)=0, a(4)=2, a(5)=1, a(6)=3, a(7)=1, a(8)=4, a(9)=2, a(10)=6, a(11)=3, a(12)=8, a(13)=4, a(14)=10, a(15)=6, a(16)=13, a(n) = a(n-2) + a(n-4) + a(n-5) - a(n-7) - a(n-8) - a(n-9) - a(n-10) + a(n-12) + a(n-13) + a(n-15) - a(n-17). - Harvey P. Dale, Dec 19 2011

MATHEMATICA

CoefficientList[Series[1/((1-x^2)(1-x^4)(1-x^5)(1-x^6)), {x, 0, 60}], x] (* Harvey P. Dale, Dec 19 2011 *)

PROG

(PARI) Vec(1/((1-x^2)*(1-x^4)*(1-x^5)*(1-x^6)) + O(x^80)) \\ Jinyuan Wang, Mar 15 2020

CROSSREFS

Sequence in context: A113322 A007380 A319162 * A322994 A256147 A079786

Adjacent sequences:  A029168 A029169 A029170 * A029172 A029173 A029174

KEYWORD

nonn,easy

AUTHOR

N. J. A. Sloane

STATUS

approved

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Last modified August 11 18:37 EDT 2020. Contains 336428 sequences. (Running on oeis4.)