507510784

Appears in sequences

• Greatest common divisor of (n+2)! and n^n.at n=21A062776
• a(n) = n^2*4^n.at n=11A128782
• a(n) = n^2 if n is odd, n^2*2^(n-2) if n is even.at n=22A168251
• Number of solutions to x^n == 1 (mod n!).at n=43A318576