Number of n X 3 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 at least one element with value (x(i,j)-1) mod 3, and upper left element zero.
A231032
Number of n X 3 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 at least one element with value (x(i,j)-1) mod 3, and upper left element zero.
Terms
- a(0) =0a(1) =0a(2) =10a(3) =32a(4) =278a(5) =2988a(6) =23058a(7) =199272a(8) =1722118a(9) =14609220a(10) =124974458a(11) =1068235680a(12) =9122055726a(13) =77940647452a(14) =665873921154
External references
- oeis: A231032