Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7.
A252676
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and diagonal sum equal to 0 2 5 6 or 7 and every 3X3 column and antidiagonal sum not equal to 0 2 5 6 or 7.
Terms
- a(0) =1802a(1) =3185a(2) =9794a(3) =26744a(4) =96174a(5) =314753a(6) =916706a(7) =3355456a(8) =11123034a(9) =32742110a(10) =120563173a(11) =402117190a(12) =1187329749a(13) =4381126617a(14) =14653518344a(15) =43323504105a(16) =160002531150a(17) =535852917600
External references
- oeis: A252676