E.g.f.: A(x) = Sum_{n>=0} exp(n*(n+1)/2*x)*x^n/n!.
A135743
E.g.f.: A(x) = Sum_{n>=0} exp(n*(n+1)/2*x)*x^n/n!.
Terms
- a(0) =1a(1) =1a(2) =3a(3) =13a(4) =83a(5) =686a(6) =7132a(7) =90343a(8) =1357449a(9) =23783068a(10) =478784096a(11) =10938189329a(12) =280771780489
External references
- oeis: A135743