Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

A197195

Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 4,1,3,2,0 for x=0,1,2,3,4.

Terms

    a(0) =1a(1) =5a(2) =25a(3) =314a(4) =7363a(5) =350711a(6) =33176391a(7) =6258308430

External references