Number of (n+2)X(2+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime.
A251879
Number of (n+2)X(2+2) 0..4 arrays with every 3X3 subblock row and column sum prime and every diagonal and antidiagonal sum nonprime.
Terms
- a(0) =11492a(1) =16857a(2) =36085a(3) =100787a(4) =242531a(5) =725325a(6) =2472269a(7) =6408131a(8) =19769560a(9) =78452511a(10) =212230688a(11) =666265060a(12) =2912844580a(13) =8061613986a(14) =25541729546a(15) =117108085594a(16) =327465960182
External references
- oeis: A251879