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 3,3,2,1,2 for x=0,1,2,3,4.

A197342

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 3,3,2,1,2 for x=0,1,2,3,4.

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =8a(12) =11a(13) =8a(14) =1a(15) =1a(16) =18a(17) =38a(18) =38a(19) =18a(20) =1a(21) =1a(22) =37a(23) =103a(24) =167a(25) =103a(26) =37a(27) =1a(28) =1a(29) =73

External references