16120225domain: NAppears in sequencesValues square, differences triangular.at n=13A036449Number of n X 6 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 1 0 vertically.at n=15A207701Squares of the form k + reverse(k) for at least one k.at n=32A358880