85143

Appears in sequences

• A higher order recursion triangle sequence: m=3;l=3;e(n,k,m)=(l*k + m - 1)e(n - 1, k, m) + (m*n - l*k + 1 - m)e(n - 1, k - 1, m).at n=23A156278
• Numbers k such that (10^k)/2 - 1 is prime.at n=19A295988