Number of (n+2)X(6+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.

A252038

Number of (n+2)X(6+2) 0..4 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.

Terms

    a(0) =1080979a(1) =2297641a(2) =1083611a(3) =3353508a(4) =30060975a(5) =248966785a(6) =759807163a(7) =8322287804a(8) =80058549769a(9) =231405295872

External references