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

A197805

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =2a(6) =3a(7) =16a(8) =16a(9) =3a(10) =4a(11) =47a(12) =102a(13) =47a(14) =4a(15) =6a(16) =154a(17) =596a(18) =596a(19) =154a(20) =6a(21) =9a(22) =496a(23) =3713a(24) =7185a(25) =3713a(26) =496a(27) =9a(28) =13a(29) =1601

External references