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

A252039

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

Terms

    a(0) =10991a(1) =31774a(2) =31774a(3) =53776a(4) =55941a(5) =53776a(6) =112929a(7) =84953a(8) =84953a(9) =112929a(10) =327823a(11) =183494a(12) =43475a(13) =183494a(14) =327823a(15) =1080979a(16) =710758a(17) =85570a(18) =85570a(19) =710758a(20) =1080979a(21) =2183207a(22) =2297641a(23) =309509a(24) =242893a(25) =309509a(26) =2297641a(27) =2183207a(28) =5486634a(29) =9138994

External references