Number of n X n binary matrices containing no 2 X 2 all-1s sub-block.

A139810

Number of n X n binary matrices containing no 2 X 2 all-1s sub-block.

Terms

    a(0) =1a(1) =2a(2) =15a(3) =417a(4) =42176a(5) =15701273a(6) =21418970801

External references