162321

Appears in sequences

• McKay-Thompson series of class 21A for Monster.at n=34A058563
• a(n) = Sum_{ r = 0 to n} L(n,r), where L(n,r) (A067049) = lcm(n, n-1, n-2, ..., n-r+1)/lcm(1, 2, 3, ..., r).at n=20A061297