Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum not 3 or 6 and every diagonal and antidiagonal sum 3 or 6.
A251825
Number of (n+2)X(4+2) 0..3 arrays with every 3X3 subblock row and column sum not 3 or 6 and every diagonal and antidiagonal sum 3 or 6.
Terms
- a(0) =22266a(1) =75498a(2) =397474a(3) =1692106a(4) =10655426a(5) =60427490a(6) =266585018a(7) =1720131962a(8) =9899825738a(9) =44110390034a(10) =286549040066
External references
- oeis: A251825