187054domain: NAppears in sequencesLeast m such that both p|m and p+2|m+2 for twin prime pairs (p,p+2) (p=A001359).at n=22A097972Number of 6Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 1 0 vertically.at n=7A207115