T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
A251852
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every row, column, diagonal or antidiagonal in each 3X3 subblock summing to a prime.
Terms
- a(0) =2148a(1) =4953a(2) =4953a(3) =15899a(4) =17795a(5) =15899a(6) =67209a(7) =138538a(8) =138538a(9) =67209a(10) =327193a(11) =1186375a(12) =2118665a(13) =1186375a(14) =327193a(15) =1697028a(16) =10462787a(17) =30754863a(18) =30754863a(19) =10462787a(20) =1697028a(21) =9016304a(22) =93874605a(23) =458278940a(24) =736849090a(25) =458278940
External references
- oeis: A251852