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

A196572

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

Terms

    a(0) =1a(1) =1a(2) =16a(3) =145a(4) =8781a(5) =770738a(6) =209244430a(7) =130044352635

External references