524288000

Appears in sequences

• a(n) = gcd(Phi(n!), Phi(n^n), Phi(lcm(1..n))).at n=39A064449
• Number of (n+1) X (n+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal minimum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally.at n=20A253461
• Decimal representation of the n-th iteration of the "Rule 125" elementary cellular automaton starting with a single ON (black) cell.at n=14A267360
• Optimal link functions for repeat avoidance in double elimination tournaments.at n=28A356189