542474domain: NAppears in sequencesNumber of nX3 0..1 arrays with every element unequal to 0, 2, 3, 4 or 6 king-move adjacent elements, with upper left element zero.at n=10A304546Expansion of (1/x) * Series_Reversion( x / (1 + x^2 * (1 + x)^2) ).at n=16A389062