G.f. satisfies A(x) = (1 + x*A(x)*(1 + x*A(x)))^3.
A365128
G.f. satisfies A(x) = (1 + x*A(x)*(1 + x*A(x)))^3.
Terms
- a(0) =1a(1) =3a(2) =15a(3) =88a(4) =567a(5) =3876a(6) =27607a(7) =202653a(8) =1522365a(9) =11647038a(10) =90435804a(11) =710855544a(12) =5645365576a(13) =45228648078a(14) =365109237801
External references
- oeis: A365128