2070979domain: NAppears in sequencesNumbers k such that 299*2^k + 1 is prime.at n=37A053366Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 1 3 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 1 3 6 or 7.at n=14A252302