E.g.f. (1-x)/(1-2x-x^3+x^4).
A052604
E.g.f. (1-x)/(1-2x-x^3+x^4).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =30a(4) =240a(5) =2520a(6) =32400a(7) =478800a(8) =8104320a(9) =154586880a(10) =3273177600a(11) =76241088000
External references
- oeis: A052604
A052604
E.g.f. (1-x)/(1-2x-x^3+x^4).