Number of (n+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.
A232399
Number of (n+1)X(n+1) 0..2 arrays with every element next to itself plus and minus one within the range 0..2 horizontally or vertically, with no adjacent elements equal.
Terms
- a(0) =4a(1) =16a(2) =52a(3) =1120a(4) =13532a(5) =798692a(6) =31802528a(7) =5824262024a(8) =752183288216
External references
- oeis: A232399