707786domain: NAppears in sequencesNumbers n such that n, n+1, n+2, n+3, and n+4 are not divisible by any of their nonzero digits.at n=19A244359Number of (n+2) X (1+2) 0..1 arrays with each 3 X 3 subblock having clockwise perimeter pattern 00010101 01010101 or 01010111.at n=15A260131