81653domain: NAppears in sequencesNumbers k such that 5*10^k + 9 is prime.at n=18A103004Number of (n+2) X (5+2) 0..1 arrays with no 3 x 3 subblock diagonal sum 0 and no antidiagonal sum 3 and no row sum 1 and no column sum 1.at n=23A257444Euler transform of odd primes.at n=12A353065