1464450domain: NAppears in sequencesNumber of nX7 0..1 arrays avoiding 0 0 0 and 0 1 1 horizontally and 0 0 1 and 1 0 1 vertically.at n=12A207023Expansion of (-1 + Product_{k>=1} 1 / (1 + (-x)^k))^6.at n=32A341245