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

A196641

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

Terms

    a(0) =1a(1) =1a(2) =1a(3) =1a(4) =2a(5) =1a(6) =1a(7) =5a(8) =5a(9) =1a(10) =1a(11) =10a(12) =21a(13) =10a(14) =1a(15) =1a(16) =26a(17) =62a(18) =62a(19) =26a(20) =1a(21) =1a(22) =65a(23) =232a(24) =327a(25) =232a(26) =65a(27) =1a(28) =1a(29) =161

External references