725759

Appears in sequences

• a(0) = 1, a(1) = 1, a(n+1) = (n+1)*a(n) + n.at n=9A020543
• If n is even, 2(n/2 + 1)! - 1; if n is odd, ((n + 1)/2 + 1)! - 1.at n=15A030494
• Triangle read by rows: (A000012 * A136572 + A136572 * A000012) - A000012.at n=54A136573
• a(n) = (n! - 5)/5.at n=5A139175
• Smallest number requiring n terms to be expressed as a sum of factorials.at n=37A200748