21111192domain: NAppears in sequencesNumbers k such that k divided by ((sum of digits of k) multiplied by (product of digits of k)) is prime.at n=25A066042Number of nX3 0..6 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 7, and upper left element zero.at n=9A230530