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

A196863

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =3a(8) =3a(9) =1a(10) =1a(11) =4a(12) =7a(13) =4a(14) =1a(15) =1a(16) =6a(17) =12a(18) =12a(19) =6a(20) =1a(21) =1a(22) =9a(23) =26a(24) =35a(25) =26a(26) =9a(27) =1a(28) =1a(29) =13

External references