25401601

Appears in sequences

• a(n) = (n!)^2 + 1.at n=7A020549
• a(n) = 7*n! + 1.at n=10A229554
• a(n) = (n!)^2 * Sum_{d|n} 1 / (d!)^2.at n=6A336241
• a(n) = (n!)^2 * Sum_{d|n} (-1)^(d+1) / (d!)^2.at n=6A336242
• a(n) = n! * Sum_{d|n} (n/d)! / d!.at n=6A354862