Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x+x^3) )^(2*n).
A372465
Coefficient of x^n in the expansion of 1 / ( (1-x) * (1-x+x^3) )^(2*n).
Terms
- a(0) =1a(1) =4a(2) =36a(3) =358a(4) =3740a(5) =40194a(6) =439998a(7) =4879326a(8) =54630316a(9) =616194700a(10) =6991215286a(11) =79700776588a(12) =912207989030
External references
- oeis: A372465