E.g.f.: A(x) = Product_{n>=1} (1 + x^n/n)^n.
A181541
E.g.f.: A(x) = Product_{n>=1} (1 + x^n/n)^n.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =12a(4) =54a(5) =390a(6) =3120a(7) =28140a(8) =290640a(9) =3354960a(10) =42561120a(11) =586259520a(12) =8806422240a(13) =141680579040
External references
- oeis: A181541