Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 or 4.
A252292
Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 1 or 4.
Terms
- a(0) =79607a(1) =126017a(2) =596945a(3) =4209322a(4) =33076723a(5) =268261981a(6) =2178722578a(7) =17710640816a(8) =144353942697
External references
- oeis: A252292