Number of (n+2)X(4+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime.
A251881
Number of (n+2)X(4+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime.
Terms
- a(0) =49529a(1) =100787a(2) =237142a(3) =1036785a(4) =4243461a(5) =14269266a(6) =64083601a(7) =266275459a(8) =902777675a(9) =4085369642a(10) =17034771641a(11) =57889402251a(12) =262673853730
External references
- oeis: A251881