G.f.: A(x) = F(x*F(x)^2) where F(x) = 1 + x*F(x)^3 is the g.f. of A001764.
A153292
G.f.: A(x) = F(x*F(x)^2) where F(x) = 1 + x*F(x)^3 is the g.f. of A001764.
Terms
- a(0) =1a(1) =1a(2) =5a(3) =31a(4) =211a(5) =1516a(6) =11295a(7) =86423a(8) =675051a(9) =5361323a(10) =43171480a(11) =351709926a(12) =2894115003a(13) =24022408477a(14) =200918146461
External references
- oeis: A153292