Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.

A251838

Number of (n+2)X(1+2) 0..3 arrays with every 3X3 subblock row and column sum nonprime and every diagonal and antidiagonal sum prime.

Terms

    a(0) =974a(1) =981a(2) =641a(3) =872a(4) =1443a(5) =1951a(6) =2784a(7) =4949a(8) =7897a(9) =11384a(10) =21033a(11) =35203a(12) =50846a(13) =95287a(14) =161329a(15) =232978a(16) =438821a(17) =745265a(18) =1075374a(19) =2030079a(20) =3451785a(21) =4975148a(22) =9405623a(23) =16003305a(24) =23037002a(25) =43604345a(26) =74229499a(27) =106714968a(28) =202216349a(29) =344400871

External references