T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7.
A251923
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum 2 4 5 or 7 and every diagonal and antidiagonal sum not 2 4 5 or 7.
Terms
- a(0) =1194a(1) =1914a(2) =1914a(3) =2524a(4) =3054a(5) =2524a(6) =3260a(7) =4624a(8) =4624a(9) =3260a(10) =5810a(11) =4938a(12) =6086a(13) =4938a(14) =5810a(15) =8932a(16) =10704a(17) =10820a(18) =10820a(19) =10704a(20) =8932a(21) =12872a(22) =19964a(23) =27366a(24) =25882a(25) =27366a(26) =19964a(27) =12872a(28) =21518a(29) =34396
External references
- oeis: A251923