1162084domain: NAppears in sequencesSolutions to mod(sigma(x), 6) = 5.at n=25A074384Number of 2 X n 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=19A207025Numbers k whose base-10 digits can be split into two parts, q and r, with k = (q-r)^2.at n=9A228103