Expansion of g.f. A(x) = Sum_{n=-oo..+oo} x^n * (3 + x^n)^(2*n).
A363559
Expansion of g.f. A(x) = Sum_{n=-oo..+oo} x^n * (3 + x^n)^(2*n).
Terms
- a(0) =1a(1) =10a(2) =81a(3) =757a(4) =6561a(5) =59454a(6) =531496a(7) =4788072a(8) =43046721a(9) =387480753a(10) =3486784492a(11) =31381709148a(12) =282429556893
External references
- oeis: A363559