a(n) = coefficient of x^n*y^(n+1)/n! in log( Sum_{n>=0} (n^2 + n*y + y^2)^n * x^n/n! ).
A319834
a(n) = coefficient of x^n*y^(n+1)/n! in log( Sum_{n>=0} (n^2 + n*y + y^2)^n * x^n/n! ).
Terms
- a(0) =1a(1) =2a(2) =15a(3) =184a(4) =3325a(5) =79056a(6) =2345539a(7) =83505920a(8) =3472829721a(9) =165321395200
External references
- oeis: A319834