Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
A252365
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 3 4 6 or 7.
Terms
- a(0) =658a(1) =2338a(2) =10450a(3) =45516a(4) =192946a(5) =818040a(6) =3482672a(7) =14848406a(8) =63260032a(9) =269276490a(10) =1146479186a(11) =4882764600a(12) =20793914762a(13) =88545635100a(14) =377056380768
External references
- oeis: A252365