Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5.
A252601
Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 1 2 or 5.
Terms
- a(0) =2792a(1) =6978a(2) =22623a(3) =81441a(4) =318274a(5) =1274571a(6) =5243537a(7) =21992185a(8) =92865411a(9) =394359153a(10) =1680557237a(11) =7170758789a(12) =30633016745a(13) =130953875907a(14) =559929985978
External references
- oeis: A252601