244628domain: NAppears in sequencesG.f. satisfies: A(x) = Sum_{n>=0} x^n * (3 + A(x)^n)^n.at n=6A247331Number of nX6 0..1 arrays with every element equal to 1 or 2 horizontally, vertically or antidiagonally adjacent elements, with upper left element zero.at n=12A300348