1900928domain: NAppears in sequencesE.g.f. satisfies: A'(x) = A(x)^7 / A(-x) with A(0) = 1.at n=6A236953Number of n X 2 0..1 arrays with the number of 1's horizontally, antidiagonally or vertically adjacent to some 0 two less than the number of 0's adjacent to some 1.at n=11A289645