938568domain: NAppears in sequencesNumbers m such that N = (am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,67.at n=25A065701Number of (n+1)X(2+1) 0..3 arrays with the sum of all four elements of every 2X2 subblock equal.at n=7A237009