Expansion of g.f.: ( Sum_{n>=0} (2*n+1)*3^n*(-x)^(n*(n+1)/2) )^(-1/3).
A193237
Expansion of g.f.: ( Sum_{n>=0} (2*n+1)*3^n*(-x)^(n*(n+1)/2) )^(-1/3).
Terms
- a(0) =1a(1) =3a(2) =18a(3) =141a(4) =1125a(5) =9261a(6) =78255a(7) =673137a(8) =5864238a(9) =51592770a(10) =457484382a(11) =4082618376a(12) =36627119109a(13) =330070717935
External references
- oeis: A193237