G.f. satisfies: A(x) = Sum_{n>=0} x^n * Product_{k=1..n} (A(x)^k - x^k).
A229182
G.f. satisfies: A(x) = Sum_{n>=0} x^n * Product_{k=1..n} (A(x)^k - x^k).
Terms
- a(0) =1a(1) =1a(2) =1a(3) =4a(4) =13a(5) =54a(6) =227a(7) =1019a(8) =4762a(9) =23012a(10) =114487a(11) =583893a(12) =3044598a(13) =16197880a(14) =87798933a(15) =484377698a(16) =2718044549a(17) =15507602279a(18) =89947655628a(19) =530420332747
External references
- oeis: A229182