Number of (n+2) X (5+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 4 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 4 6 or 7.
A252637
Number of (n+2) X (5+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 0 3 4 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 0 3 4 6 or 7.
Terms
- a(0) =6598a(1) =22701a(2) =110665a(3) =448323a(4) =2641643a(5) =13960830a(6) =62261756a(7) =378997999a(8) =2046478799a(9) =9628330801a(10) =59374168196a(11) =322709718271
External references
- oeis: A252637