Number of (n+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8.
A252045
Number of (n+2) X (n+2) 0..3 arrays with every 3 X 3 subblock row and column sum not 1 3 6 or 8 and every diagonal and antidiagonal sum 1 3 6 or 8.
Terms
- a(0) =1552a(1) =2454a(2) =2674a(3) =6562a(4) =53346a(5) =233342a(6) =658902a(7) =16790430a(8) =127185206a(9) =456725582a(10) =51136630446a(11) =621643287922
External references
- oeis: A252045