|
%I #7 Jul 30 2015 23:11:28
%S 1,0,1,0,2,0,2,1,3,2,3,3,4,4,5,5,7,6,9,7,11,9,13,11,15,14,17,17,20,20,
%T 23,23,27,26,31,30,36,34,40,39,45,44,50,50,56,56,62,62,69,69,76,76,84,
%U 84,92,92,101,101,110,110
%N Expansion of 1/((1-x^2)(1-x^4)(1-x^7)(1-x^9)).
%H <a href="/index/Rec#order_22">Index entries for linear recurrences with constant coefficients</a>, signature (0, 1, 0, 1, 0, -1, 1, 0, 0, 0, -2, 0, 0, 0, 1, -1, 0, 1, 0, 1, 0, -1).
%F a(0)=1, a(1)=0, a(2)=1, a(3)=0, a(4)=2, a(5)=0, a(6)=2, a(7)=1, a(8)=3, a(9)=2, a(10)=3, a(11)=3, a(12)=4, a(13)=4, a(14)=5, a(15)=5, a(16)=7, a(17)=6, a(18)=9, a(19)=7, a(20)=11, a(21)=9, a(n)=a(n-2)+a(n-4)- a(n-6)+ a(n-7)-2*a(n-11)+a(n-15)-a(n-16)+a(n-18)+a(n-20)-a(n-22). - _Harvey P. Dale_, Dec 10 2013
%t CoefficientList[Series[1/((1-x^2)(1-x^4)(1-x^7)(1-x^9)),{x,0,60}],x] (* or *) LinearRecurrence[{0,1,0,1,0,-1,1,0,0,0,-2,0,0,0,1,-1,0,1,0,1,0,-1},{1,0,1,0,2,0,2,1,3,2,3,3,4,4,5,5,7,6,9,7,11,9},60] (* _Harvey P. Dale_, Dec 10 2013 *)
%K nonn
%O 0,5
%A _N. J. A. Sloane_.
|
