login
Expansion of 1/((1-x^4)*(1-x^6)*(1-x^7)*(1-x^9)).
0

%I #9 Feb 28 2020 08:18:32

%S 1,0,0,0,1,0,1,1,1,1,1,1,2,2,2,2,3,2,4,3,4,4,5,4,6,6,6,7,8,7,9,9,10,

%T 10,12,11,14,13,14,15,17,16,19,19,20,21,23,22,26,26,27,28,31,30,34,34,

%U 36,37,40,39,44,44,46,48,51

%N Expansion of 1/((1-x^4)*(1-x^6)*(1-x^7)*(1-x^9)).

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

%t CoefficientList[Series[1/((1-x^4)(1-x^6)(1-x^7)(1-x^9)),{x,0,70}],x] (* or *) LinearRecurrence[{0,0,0,1,0,1,1,0,1,-1,-1,0,-2,0,-1,-1,1,0,1,1,0,1,0,0,0,-1},{1,0,0,0,1,0,1,1,1,1,1,1,2,2,2,2,3,2,4,3,4,4,5,4,6,6},70] (* _Harvey P. Dale_, Nov 24 2017 *)

%o (PARI) Vec(1/((1-x^4)*(1-x^6)*(1-x^7)*(1-x^9)) + O(x^80)) \\ _Jinyuan Wang_, Feb 28 2020

%K nonn

%O 0,13

%A _N. J. A. Sloane_