19941490

Appears in sequences

• Number of (n+2)X(n+2) binary arrays with each 3X3 subblock nonsingular.at n=3A185525
• Number of (n+2)X6 binary arrays with each 3X3 subblock nonsingular.at n=3A185529
• T(n,k)=Number of (n+2)X(k+2) binary arrays with each 3X3 subblock nonsingular.at n=24A185534