Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5.
A252600
Number of (n+2)X(3+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5.
Terms
- a(0) =1218a(1) =2784a(2) =7769a(3) =22623a(4) =71730a(5) =232461a(6) =769153a(7) =2611733a(8) =8938660a(9) =30784161a(10) =106717723a(11) =370643667a(12) =1289466342a(13) =4493808206a(14) =15667121453a(15) =54642066857a(16) =190661995672a(17) =665342388224
External references
- oeis: A252600