Number of 4Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
A230472
Number of 4Xn 0..2 arrays x(i,j) with each element horizontally, diagonally or antidiagonally next to at least one element with value (x(i,j)+1) mod 3, and upper left element zero.
Terms
- a(0) =0a(1) =8a(2) =1384a(3) =76518a(4) =3062214a(5) =131421154a(6) =5660619846a(7) =245148922672
External references
- oeis: A230472