a(n) = coefficient of x^n*y^n/n in log( Product_{n>=1} 1/(1 - (x^(2*n) - y^(2*n))/(x - y)) ), for n >= 1.

A322191

a(n) = coefficient of x^n*y^n/n in log( Product_{n>=1} 1/(1 - (x^(2*n) - y^(2*n))/(x - y)) ), for n >= 1.