487198080

Appears in sequences

• a(1) = 1. a(n) = n times (10's complement of a(n-1)).at n=8A110395
• a(n) = n! * Sum_{k=1..n-1} (-1)^(k+1) * n^(n-k-2) / (n-k-1)!.at n=9A347994