G.f. A(x) satisfies: Series_Reversion( x/A(x) ) / x = 2*A(x) - (1+x).
A120955
G.f. A(x) satisfies: Series_Reversion( x/A(x) ) / x = 2*A(x) - (1+x).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =25a(5) =206a(6) =2060a(7) =23920a(8) =314065a(9) =4582300a(10) =73393490a(11) =1278859176a(12) =24073541260a(13) =486806278752
External references
- oeis: A120955