404481

Appears in sequences

• a(n) = (2*n-1)*(3*n-1)*(4*n-1).at n=26A033589
• Number of (n+4)X6 0..1 matrices with each 5X5 subblock idempotent.at n=25A224684
• a(n) = (1/24)*n*((4*n + 3)*(2*n^2 + 1) - 3*(-1)^n).at n=33A325656