G.f.: A(x) = INV(x - x*INV(x - 2*x^2*INV(x - 3*x^3*INV(x - 4*x^4*INV(x - ...))))), where INV(F(x)) = series reversion of F(x).
A196709
G.f.: A(x) = INV(x - x*INV(x - 2*x^2*INV(x - 3*x^3*INV(x - 4*x^4*INV(x - ...))))), where INV(F(x)) = series reversion of F(x).
Terms
- a(0) =1a(1) =1a(2) =2a(3) =7a(4) =26a(5) =110a(6) =490a(7) =2289a(8) =11032a(9) =54566a(10) =275290a(11) =1411846a(12) =7339180a(13) =38588752a(14) =204877804a(15) =1096919969a(16) =5916055860a(17) =32113211082a(18) =175311638256a(19) =961935749512
External references
- oeis: A196709