206448domain: NAppears in sequencesa(n) = A100092(n^2+1).at n=18A100093Number of n X 2 0..4 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 5, and upper left element zero.at n=13A230393Wiener index of the n X n knight graph.at n=13A292054