969275domain: NAppears in sequencesNumber of nX4 0..1 arrays with every element unequal to 0, 1, 2, 6 or 7 king-move adjacent elements, with upper left element zero.at n=18A305036Expansion of (1/x) * Series_Reversion( x * (1/(1+x^3) - x) ).at n=12A369630