G.f. satisfies: A(x) = Sum_{n>=0} x^n * Product_{k=1..n} A(k*x)/(1+k*x).
A193353
G.f. satisfies: A(x) = Sum_{n>=0} x^n * Product_{k=1..n} A(k*x)/(1+k*x).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =2a(4) =7a(5) =30a(6) =197a(7) =1770a(8) =22536a(9) =409456a(10) =10541949a(11) =387914810a(12) =20362048664
External references
- oeis: A193353