Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,3,0,2,4 for x=0,1,2,3,4.
A196315
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 1,3,0,2,4 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =7a(2) =30a(3) =495a(4) =17093a(5) =1313940a(6) =228181579a(7) =88027683663
External references
- oeis: A196315