Expansion of g.f. -x*(5*x^7-20*x^6-2*x^5+54*x^4+7*x^3-20*x^2-8*x-1)/((x^4-x^3-3*x^2+x+1)*(x^4+x^3-3*x^2-x+1)).

A122013

Expansion of g.f. -x*(5*x^7-20*x^6-2*x^5+54*x^4+7*x^3-20*x^2-8*x-1)/((x^4-x^3-3*x^2+x+1)*(x^4+x^3-3*x^2-x+1)).

Terms

    a(0) =1a(1) =8a(2) =27a(3) =49a(4) =122a(5) =241a(6) =530a(7) =1101a(8) =2312a(9) =4909a(10) =10121a(11) =21688a(12) =44379a(13) =95465a(14) =194734a(15) =419573a(16) =854746a(17) =1842873a(18) =3752212a(19) =8092229a(20) =16472545a(21) =35529800a(22) =72317547a(23) =155990161a(24) =317490482a(25) =684846457a(26) =1393860866a(27) =3006669477a(28) =6119400080

External references