Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,2 for x=0,1,2,3,4.
A197240
Number of nX6 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,3,2,1,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =37a(2) =507a(3) =6284a(4) =89527a(5) =1209990a(6) =16248436a(7) =220537819a(8) =2991520965a(9) =40512793371a(10) =548735832406
External references
- oeis: A197240