5858896domain: NAppears in sequencesNumber of (n+1) X 4 binary arrays with every 2 X 2 subblock singular.at n=6A184680Number of (n+1)X8 binary arrays with every 2X2 subblock singular.at n=2A184684T(n,k)=Number of (n+1)X(k+1) binary arrays with every 2X2 subblock singular.at n=38A184686