Expansion of e.g.f. (1-x^2)*(1-x)/(1-2x-x^2+x^3).
A052658
Expansion of e.g.f. (1-x^2)*(1-x)/(1-2x-x^2+x^3).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =30a(4) =264a(5) =3000a(6) =40320a(7) =635040a(8) =11410560a(9) =230791680a(10) =5185555200a(11) =128172844800
External references
- oeis: A052658