Expansion of e.g.f.: exp(Sum_{k>=1} 3*x^k).
A255806
Expansion of e.g.f.: exp(Sum_{k>=1} 3*x^k).
Terms
- a(0) =1a(1) =3a(2) =15a(3) =99a(4) =801a(5) =7623a(6) =83079a(7) =1017495a(8) =13808097a(9) =205374123a(10) =3318673599a(11) =57845821707
External references
- oeis: A255806