905920

Appears in sequences

• Expansion of 1/((1-x)(1-4x)(1-5x)(1-7x)).at n=6A021754
• Triangle read by rows: T(n,k) (1<=k<=n) given by T(n, 1) = T(n,n) = 1, otherwise T(n, k) = (m*n-m*k+1)*T(n-1,k-1) + (m*k-m+1)*T(n-1,k), where m = 5.at n=24A142460