2152660domain: NAppears in sequencesNumber of nX6 0..1 arrays with every element equal to 0, 2, 3 or 6 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=8A300680Expansion of 1/((1 - x + x^4)^2 + 4*x^5).at n=26A375290