7650720domain: NAppears in sequencesExpansion of Product_{k>=1} ((1+x^k)/(1-x^k))^(3*k).at n=13A261389Fourier coefficients of Eisenstein series of degree 2 and weight 4: a(n) = coefficient of the matrix [n, 0; 0, 1] with determinant n.at n=8A323991