4100000domain: NAppears in sequencesNumber of (n+1) X (5+1) 0..2 arrays with every 2 X 2 subblock diagonal maximum minus antidiagonal minimum unequal to its neighbors horizontally, vertically, diagonally and antidiagonally.at n=14A253466Inflation orbit counts b^(4)(n) for the Elser-Sloane tiling.at n=7A329489