Expansion of e.g.f. exp(x*(1 + 3*x + 6*x^2 + 3*x^3 + x^4)/(1 - x^2)^3).
A308418
Expansion of e.g.f. exp(x*(1 + 3*x + 6*x^2 + 3*x^3 + x^4)/(1 - x^2)^3).
Terms
- a(0) =1a(1) =1a(2) =7a(3) =73a(4) =649a(5) =8821a(6) =122311a(7) =2064637a(8) =37933393a(9) =773276329a(10) =17257075111a(11) =414876953041
External references
- oeis: A308418