T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7.
A251876
T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with every 3X3 subblock row and column sum not 2 4 5 or 7 and every diagonal and antidiagonal sum 2 4 5 or 7.
Terms
- a(0) =1038a(1) =2146a(2) =2146a(3) =3092a(4) =5632a(5) =3092a(6) =5756a(7) =7160a(8) =7160a(9) =5756a(10) =11008a(11) =15116a(12) =7080a(13) =15116a(14) =11008a(15) =18400a(16) =36852a(17) =9936a(18) =9936a(19) =36852a(20) =18400a(21) =32372a(22) =41816a(23) =18464a(24) =13152a(25) =18464a(26) =41816a(27) =32372a(28) =60292a(29) =99808
External references
- oeis: A251876