Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,1,1 for x=0,1,2,3,4.
A197778
Number of nX4 0..4 arrays with each element x equal to the number its horizontal and vertical neighbors equal to 3,2,1,1,1 for x=0,1,2,3,4.
Terms
- a(0) =3a(1) =43a(2) =338a(3) =3021a(4) =25962a(5) =221082a(6) =1924263a(7) =16672219a(8) =144064579a(9) =1245052112a(10) =10769305267a(11) =93170128818a(12) =805820664778
External references
- oeis: A197778