T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,2,1,4,0 for x=0,1,2,3,4.

A197167

T(n,k)=Number of nXk 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,2,1,4,0 for x=0,1,2,3,4.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =2a(6) =3a(7) =14a(8) =14a(9) =3a(10) =4a(11) =37a(12) =66a(13) =37a(14) =4a(15) =6a(16) =104a(17) =306a(18) =306a(19) =104a(20) =6a(21) =9a(22) =290a(23) =1489a(24) =2573a(25) =1489a(26) =290a(27) =9a(28) =13a(29) =803

External references