2886875domain: NAppears in sequencesG.f. A(x) satisfies: A(x)^2 = A( x^2/(1-10*x) ), with A(0) = 0.at n=7A264227Number of nX3 0..1 arrays with every element unequal to 0, 1, 3 or 4 king-move adjacent elements, with upper left element zero.at n=20A303803