262276domain: NAppears in sequencesCoordination sequence for 4-dimensional face-centered cubic orthogonal lattice.at n=34A008529Numbers n such that sigma(n)/phi(n) = 25/4, where sigma = A000203, phi = A000010.at n=10A165629Bitmaps of king + rook vs. king checkmate patterns on a standard 8 X 8 board.at n=23A362950