E.g.f.: Product_{n>=1} 1/(1 - x^n/n!)^(2^n).
A199163
E.g.f.: Product_{n>=1} 1/(1 - x^n/n!)^(2^n).
Terms
- a(0) =1a(1) =2a(2) =10a(3) =56a(4) =404a(5) =3272a(6) =30688a(7) =316304a(8) =3609656a(9) =44624624a(10) =597131600a(11) =8555752064a(12) =130941724064
External references
- oeis: A199163