Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
A252331
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row and column sum equal to 0 3 5 6 or 8 and every 3X3 diagonal and antidiagonal sum not equal to 0 3 5 6 or 8.
Terms
- a(0) =20782a(1) =19540a(2) =68675a(3) =214176a(4) =1091359a(5) =3999229a(6) =13814611a(7) =72653087a(8) =271107529a(9) =955749031a(10) =5021999771a(11) =18759236477a(12) =66726088706a(13) =352163988663
External references
- oeis: A252331