126209domain: NAppears in sequencesa(n)=(-1)^n(1 - (1/12)n(n + 1)(12 - n + n^2)).at n=35A0802753n^3 - 2n^2 + n - 1.at n=34A130885Number of nX2 0..1 arrays with every element unequal to 1, 2 or 4 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=15A317857