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

A196337

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

Terms

    a(0) =1a(1) =3a(2) =3a(3) =4a(4) =5a(5) =4a(6) =5a(7) =8a(8) =8a(9) =5a(10) =8a(11) =17a(12) =7a(13) =17a(14) =8a(15) =12a(16) =34a(17) =50a(18) =50a(19) =34a(20) =12a(21) =17a(22) =62a(23) =111a(24) =335a(25) =111a(26) =62a(27) =17a(28) =25a(29) =123

External references