85543

Appears in sequences

• Irregular triangle read by rows: T(n,k) is the number of permutations of {1,2,...,n} having k white corners.at n=41A140711
• a(n) = 74*n^2 - 1.at n=33A158744
• a(n) = Sum_{k=1..n-1} sigma(k)*sigma_3(n-k).at n=15A374963