124590domain: NAppears in sequencesG.f. satisfies: 4*A(x) = 3 + x + A(x)^3, starting with [1,1,3].at n=7A120590Number of (n+2)X(1+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00000011 or 00010011.at n=12A260760