G.f.: exp( Sum_{n>=1} a(n)*x^n/n ) = Product_{n>=1} 1/(1 - a(n-1)*x^n).
A157313
G.f.: exp( Sum_{n>=1} a(n)*x^n/n ) = Product_{n>=1} 1/(1 - a(n-1)*x^n).
Terms
- a(0) =1a(1) =1a(2) =3a(3) =10a(4) =43a(5) =216a(6) =1326a(7) =9283a(8) =74667a(9) =672085a(10) =6730098a(11) =74031079a(12) =888657130a(13) =11552542691a(14) =161747905609
External references
- oeis: A157313