G.f. A(x) satisfies: A(x) = Sum_{n>=0} x^n * (A(x) + (1+x)^n)^n.
A302061
G.f. A(x) satisfies: A(x) = Sum_{n>=0} x^n * (A(x) + (1+x)^n)^n.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =31a(4) =155a(5) =837a(6) =4782a(7) =28532a(8) =176449a(9) =1125498a(10) =7382239a(11) =49700694a(12) =343141590a(13) =2428982923a(14) =17633960882a(15) =131388799369
External references
- oeis: A302061