401390133264domain: NAppears in sequencesNumber of (n+1) X 3 0..3 arrays with every 2 X 2 subblock nonsingular.at n=5A183703Number of (n+1)X7 0..3 arrays with every 2X2 subblock nonsingular.at n=1A183707T(n,k) = Number of (n+1) X (k+1) 0..3 arrays with every 2 X 2 subblock nonsingular.at n=22A183710