Number of nX4 0..7 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero.
A230511
Number of nX4 0..7 arrays x(i,j) with each element horizontally or vertically next to at least one element with value (x(i,j)+1) mod 8, and upper left element zero.
Terms
- a(0) =0a(1) =2a(2) =170a(3) =4648a(4) =129874a(5) =4038314a(6) =129829460a(7) =4177480490a(8) =133348597190
External references
- oeis: A230511