G.f. A(x) satisfies A(x)^3 = 1 + x*A(x) + x*A(x)^2 + x*A(x)^6.
A300048
G.f. A(x) satisfies A(x)^3 = 1 + x*A(x) + x*A(x)^2 + x*A(x)^6.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =29a(5) =131a(6) =627a(7) =3124a(8) =16032a(9) =84162a(10) =449828a(11) =2439550a(12) =13391105a(13) =74256824a(14) =415357737a(15) =2340775363a(16) =13278009018a(17) =75753246286a(18) =434392031856
External references
- oeis: A300048