Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.
A252200
Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 3 5 6 or 7.
Terms
- a(0) =10074a(1) =23265a(2) =206825a(3) =1669356a(4) =13460703a(5) =110131575a(6) =896763106a(7) =7301549086a(8) =59570598688a(9) =485457428350
External references
- oeis: A252200