Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
A252266
Number of (n+2)X(5+2) 0..3 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 2 3 4 6 or 7.
Terms
- a(0) =1342a(1) =6164a(2) =35486a(3) =188690a(4) =984416a(5) =5217924a(6) =27565694a(7) =145417138a(8) =769096470a(9) =4065302050a(10) =21466258282a(11) =113390920454a(12) =599189708954
External references
- oeis: A252266