Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4.
A252087
Number of (n+2)X(7+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 or 4.
Terms
- a(0) =8389a(1) =55703a(2) =457442a(3) =3603209a(4) =28883234a(5) =235656844a(6) =1915241208a(7) =15577211975a(8) =127024329067
External references
- oeis: A252087