G.f.: Sum_{n>=0} n! * (1+n*x)^n * x^n / Product_{k=1..n} (1 + k*x + n*k*x^2).
A185310
G.f.: Sum_{n>=0} n! * (1+n*x)^n * x^n / Product_{k=1..n} (1 + k*x + n*k*x^2).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =29a(5) =154a(6) =961a(7) =6989a(8) =57856a(9) =537507a(10) =5539661a(11) =62713770a(12) =773755901a(13) =10333514049a(14) =148523400880
External references
- oeis: A185310