131083domain: NAppears in sequencesNumber of 4Xn 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 0 and 1 0 1 vertically.at n=9A2077862^p + 11 where p is prime.at n=6A241680a(n) = 2^n + 11.at n=17A267615