Expansion of e.g.f. Product_{k>=1} (1 + arctanh(x^k)).
A330544
Expansion of e.g.f. Product_{k>=1} (1 + arctanh(x^k)).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =14a(4) =48a(5) =424a(6) =3360a(7) =30288a(8) =276864a(9) =3591936a(10) =46241280a(11) =599212800a(12) =9205954560a(13) =142744412160
External references
- oeis: A330544