Number of (n+2) X (7+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1 2 5 6 or 7.
A252573
Number of (n+2) X (7+2) 0..3 arrays with every 3 X 3 subblock row and diagonal sum equal to 1 2 5 6 or 7 and every 3 X 3 column and antidiagonal sum not equal to 1 2 5 6 or 7.
Terms
- a(0) =9936a(1) =47737a(2) =208375a(3) =959944a(4) =6590930a(5) =31059674a(6) =155864925a(7) =994640586a(8) =4728064653a(9) =24277561799a(10) =152128655769a(11) =724041200896
External references
- oeis: A252573