Number of defective 3-colorings of a 2Xn 0..2 array connected horizontally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.
A229695
Number of defective 3-colorings of a 2Xn 0..2 array connected horizontally and antidiagonally with exactly two mistakes, and colors introduced in row-major 0..2 order.
Terms
- a(0) =0a(1) =3a(2) =43a(3) =245a(4) =1171a(5) =5077a(6) =20691a(7) =80757a(8) =305235a(9) =1125333a(10) =4067091a(11) =14461173a(12) =50723091a(13) =175867605a(14) =603736659a(15) =2054728053a(16) =6940088019a(17) =23284024533a(18) =77651501715a(19) =257577229557a(20) =850273182099
External references
- oeis: A229695