65788domain: NAppears in sequencesNumber of -n..n arrays x(0..4) of 5 elements with zero sum and no two neighbors equal.at n=8A199707Number of (n+1) X 5 0..1 arrays with the number of rightwards and downwards edge increases in each 2 X 2 subblock equal to the number in all its horizontal and vertical neighbors.at n=19A206263