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

A197503

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =1a(5) =1a(6) =1a(7) =9a(8) =9a(9) =1a(10) =1a(11) =9a(12) =22a(13) =9a(14) =1a(15) =1a(16) =19a(17) =53a(18) =53a(19) =19a(20) =1a(21) =1a(22) =45a(23) =162a(24) =181a(25) =162a(26) =45a(27) =1a(28) =1a(29) =73

External references