5987520

Appears in sequences

• a(n) = (n+3)!/(d(n)*d(n+1)*d(n+2)) where d(n) = cancellation factor in reducing Sum_{k=0...n} 1/k! to lowest terms.at n=9A123900
• Triangle read by rows, based on expansion of (x^2/(exp(x)-1))^m = x^m+sum(n>m T(n,m)*m!/((n-m)!*n!)*x^n).at n=56A191578
• Fourier 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=7A323991
• a(n) = n/(Sum_{k=1..n} 1/phi(A341813(n)*k)).at n=29A341814