239424domain: NAppears in sequencesNumber of (n+1) X 5 binary arrays with every 2 X 2 subblock nonsingular.at n=6A183683Number of (n+1)X8 binary arrays with every 2X2 subblock nonsingular.at n=3A183686a(n) = 288*n^2 - 96*n (n>=1).at n=28A305073a(n) = (1/e^n) * Sum_{j>=3} j^n * n^j / (j-3)!.at n=4A338282