220286domain: NAppears in sequencesExpansion of (Product_{j>=1} (1-(-x)^j) - 1)^19 in powers of x.at n=13A047644Number 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=16A305036