171124domain: NAppears in sequencesNumber of (n+2)X(5+2) 0..1 arrays with each 3X3 subblock having clockwise perimeter pattern 00000001 00001001 or 00100101.at n=10A260977G.f. A(x) satisfies Sum_{n>=1} A(x^n - x^(n+1)) = x + x^2.at n=12A377101