52075

Appears in sequences

• Number of lower triangular n X n arrays colored with integers 0 upwards introduced in row major order, with no element equal to any diagonal or antidiagonal neighbor, and containing the value n(n+1)/2-2.at n=24A211958
• Numbers k such that k![6]-2 is prime, where k![6] = A085158 (k) = sextuple factorial.at n=38A283485