Number of 2 X n 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
A230676
Number of 2 X n 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value 2-x(i,j).
Terms
- a(0) =0a(1) =15a(2) =87a(3) =513a(4) =3387a(5) =21933a(6) =141411a(7) =913245a(8) =5898099a(9) =38088477a(10) =245968275a(11) =1588424445a(12) =10257784563a(13) =66243081501a(14) =427786930899
External references
- oeis: A230676