Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4.
A197645
Number of nX5 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 4,2,2,0,2 for x=0,1,2,3,4.
Terms
- a(0) =1a(1) =66a(2) =1649a(3) =25273a(4) =407810a(5) =7296769a(6) =132750533a(7) =2314131736a(8) =40063929560a(9) =703264936092
External references
- oeis: A197645