Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 3.

A252443

Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 3.

Terms

    a(0) =9062a(1) =131202a(2) =2091042a(3) =30491181a(4) =454665875a(5) =6833055569a(6) =102043139454

External references