A029189 - OEIS

%I #10 Mar 15 2020 22:21:36

%S 1,0,1,0,2,0,2,0,3,1,3,2,4,3,4,4,5,5,6,6,8,7,10,8,12,9,14,11,16,13,18,

%T 16,20,19,22,22,25,25,28,28,32,31,36,34,41,38,45,42,50,47,54,52,59,58,

%U 64,64,70,70,76,76,83,82

%N Expansion of 1/((1-x^2)(1-x^4)(1-x^9)(1-x^11)).

%H <a href="/index/Rec#order_26">Index entries for linear recurrences with constant coefficients</a>, signature (0,1,0,1,0,-1,0,0,1,0,0,0,-2,0,0,0,1,0,0,-1,0,1,0,1,0,-1).

%t CoefficientList[Series[1/((1-x^2)(1-x^4)(1-x^9)(1-x^11)),{x,0,80}],x] (* _Harvey P. Dale_, Nov 26 2014 *)

%o (PARI) Vec(1/((1-x^2)*(1-x^4)*(1-x^9)*(1-x^11)) + O(x^80)) \\ _Jinyuan Wang_, Mar 15 2020

%K nonn,easy

%O 0,5

%A _N. J. A. Sloane_