O.g.f. satisfies: A(x) = 1/(1 - x - x*( d/dx x^2*A(x)' )).
A338301
O.g.f. satisfies: A(x) = 1/(1 - x - x*( d/dx x^2*A(x)' )).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =23a(4) =323a(5) =7159a(6) =230277a(7) =10162541a(8) =590407925a(9) =43731367965
External references
- oeis: A338301