a(n) = coefficient of x^n*y^(n+1)/n! in (1/2) * log( Sum_{n>=0} (n^2 + 3*n*y + 2*y^2)^n * x^n/n! ).
A359928
a(n) = coefficient of x^n*y^(n+1)/n! in (1/2) * log( Sum_{n>=0} (n^2 + 3*n*y + 2*y^2)^n * x^n/n! ).
Terms
- a(0) =1a(1) =6a(2) =93a(3) =2448a(4) =92505a(5) =4589568a(6) =283008621a(7) =20903023872
External references
- oeis: A359928