222173

Appears in sequences

• Numbers n such that the difference between the greatest prime divisor of n^2 + 1 and the sum of the other distinct prime divisors is equal to +-1.at n=25A244194
• Number of (n+2)X(3+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally.at n=19A259001