G.f.: exp( Sum_{n>=1} [ Sum_{k>=1} (2*k-1)^n * x^k ]^n / n ).
A292500
G.f.: exp( Sum_{n>=1} [ Sum_{k>=1} (2*k-1)^n * x^k ]^n / n ).
Terms
- a(0) =1a(1) =1a(2) =4a(3) =18a(4) =122a(5) =1382a(6) =26992a(7) =967860a(8) =59207134a(9) =6539607238
External references
- oeis: A292500