Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4.
A252028
Number of (n+2)X(4+2) 0..2 arrays with every 3X3 subblock row, column, diagonal and antidiagonal sum not equal to 0 2 or 4.
Terms
- a(0) =809a(1) =1929a(2) =7182a(3) =29781a(4) =126920a(5) =541544a(6) =2306234a(7) =9836361a(8) =42007667a(9) =179412369a(10) =766247783a(11) =3273106717a(12) =13982899118a(13) =59736693957a(14) =255202401835
External references
- oeis: A252028