Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 4 6 or 7.
A252129
Number of (n+2)X(7+2) 0..3 arrays with every 3X3 subblock row and column sum not equal to 0 3 4 6 or 7 and every 3X3 diagonal and antidiagonal sum equal to 0 3 4 6 or 7.
Terms
- a(0) =17053a(1) =218388a(2) =2216594a(3) =5921321a(4) =82061030a(5) =913218432a(6) =2318294384a(7) =33845245598a(8) =390491860658a(9) =960716888512
External references
- oeis: A252129