159318domain: NAppears in sequencesNumbers k such that 45*2^k+1 is prime.at n=36A0323721/8 the number of (n+1)X(n+1) 0..3 arrays with all 2X2 subblock sums the same.at n=5A1840201/8 the number of (n+1)X7 0..3 arrays with all 2X2 subblock sums the same.at n=5A184026