G.f. satisfies: A(x) = Sum{n>=0} A( n*x/(1-n*x) ) * x^n, with A(0)=1.
A227222
G.f. satisfies: A(x) = Sum{n>=0} A( n*x/(1-n*x) ) * x^n, with A(0)=1.
Terms
- a(0) =1a(1) =1a(2) =2a(3) =6a(4) =27a(5) =172a(6) =1508a(7) =18107a(8) =297532a(9) =6694132a(10) =206841391a(11) =8816277300a(12) =520844677834
External references
- oeis: A227222