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

A197782

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =2a(4) =5a(5) =2a(6) =3a(7) =14a(8) =14a(9) =3a(10) =4a(11) =43a(12) =67a(13) =43a(14) =4a(15) =6a(16) =124a(17) =338a(18) =338a(19) =124a(20) =6a(21) =9a(22) =352a(23) =1646a(24) =3021a(25) =1646a(26) =352a(27) =9a(28) =13a(29) =1025

External references