822165domain: NAppears in sequencesNumber of n X 5 0..1 arrays avoiding 0 0 0 and 0 1 0 horizontally and 0 0 1 and 1 0 1 vertically.at n=29A207596G.f. satisfies A(x) = 1/(1-x) + x^3*(1-x)*A(x)^4.at n=18A364596