Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 3.

A252446

Number of (n+2)X(6+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum less than 3.

Terms

    a(0) =1382414a(1) =91120655a(2) =6833055569a(3) =443610072768

External references