Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime.
A251942
Number of (n+2)X(n+2) 0..3 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime.
Terms
- a(0) =1462a(1) =1182a(2) =2272a(3) =8937a(4) =87011a(5) =1086474a(6) =14138322a(7) =436167357a(8) =12334046416a(9) =356669730440
External references
- oeis: A251942