G.f. satisfies: A(x) = x + x*A(x) + x*A(A(x)).
A120574
G.f. satisfies: A(x) = x + x*A(x) + x*A(A(x)).
Terms
- a(0) =1a(1) =2a(2) =6a(3) =26a(4) =146a(5) =978a(6) =7454a(7) =62882a(8) =576914a(9) =5687506a(10) =59732838a(11) =664040698a(12) =7775333858a(13) =95517840738
External references
- oeis: A120574