T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.

A206900

T(n,k)=Number of nXk 0..3 arrays avoiding the pattern z-2 z-1 z in any row, column or nw-to-se diagonal.

Terms

    a(0) =4a(1) =16a(2) =16a(3) =62a(4) =256a(5) =62a(6) =241a(7) =3844a(8) =3844a(9) =241a(10) =936a(11) =58081a(12) =211548a(13) =58081a(14) =936a(15) =3636a(16) =876096a(17) =11745962a(18) =11745962a(19) =876096a(20) =3636a(21) =14124a(22) =13220496a(23) =649804846a(24) =2408811358a(25) =649804846a(26) =13220496a(27) =14124a(28) =54865a(29) =199487376

External references