T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7.

A251791

T(n,k)=Number of (n+2)X(k+2) 0..3 arrays with no row, column, diagonal or antidiagonal in any 3X3 subblock summing to 2 3 6 or 7.

Terms

    a(0) =1280a(1) =1664a(2) =1664a(3) =3072a(4) =2640a(5) =3072a(6) =6144a(7) =6470a(8) =6470a(9) =6144a(10) =11834a(11) =14908a(12) =16710a(13) =14908a(14) =11834a(15) =22632a(16) =35948a(17) =44504a(18) =44504a(19) =35948a(20) =22632a(21) =44792a(22) =85826a(23) =130202a(24) =149364a(25) =130202a(26) =85826a(27) =44792a(28) =86988a(29) =210582

External references