Number of nX5 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230272
Number of nX5 0..2 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
Terms
- a(0) =0a(1) =30a(2) =2318a(3) =115630a(4) =5524854a(5) =261026756a(6) =12303458948a(7) =580318201510
External references
- oeis: A230272