Number of n X n binary matrices containing at most four 1's in any 3 X 3 sub-block.

A140307

Number of n X n binary matrices containing at most four 1's in any 3 X 3 sub-block.

Terms

    a(0) =1a(1) =2a(2) =16a(3) =256a(4) =15982a(5) =3082378a(6) =1476568000

External references