77780domain: NAppears in sequencesIndices of primes in sequence defined by A(0) = 97, A(n) = 10*A(n-1) + 17 for n > 0.at n=20A101018Number of (n+2)X(4+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010101.at n=9A260837