a(n) = coefficient of x^n*y^(3*n+1)/n! in log( Sum_{n>=0} (n + y)^(4*n) * x^n/n! ).
A360340
a(n) = coefficient of x^n*y^(3*n+1)/n! in log( Sum_{n>=0} (n + y)^(4*n) * x^n/n! ).
Terms
- a(0) =1a(1) =8a(2) =180a(3) =7072a(4) =403960a(5) =30504384a(6) =2874754624a(7) =325376606720
External references
- oeis: A360340