G.f. satisfies A(x) = 1 + x*(1 + x*A(x)^6)^5.
A137973
G.f. satisfies A(x) = 1 + x*(1 + x*A(x)^6)^5.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =40a(4) =355a(5) =3495a(6) =36251a(7) =391650a(8) =4355810a(9) =49550130a(10) =573811635a(11) =6742112506a(12) =80175836395a(13) =963137138105
External references
- oeis: A137973