Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.
A196857
Number of n X n 0..4 arrays with each element x equal to the number of its horizontal and vertical neighbors equal to 3,4,2,0,1 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =2a(2) =7a(3) =35a(4) =473a(5) =11280a(6) =494579a(7) =44461736a(8) =7927841482
External references
- oeis: A196857