Number of defective 3-colorings of an n X 3 0..2 array connected horizontally and vertically with exactly one mistake and colors introduced in row-major 0..2 order.
A229454
Number of defective 3-colorings of an n X 3 0..2 array connected horizontally and vertically with exactly one mistake and colors introduced in row-major 0..2 order.
Terms
- a(0) =2a(1) =20a(2) =140a(3) =863a(4) =4962a(5) =27313a(6) =145932a(7) =763031a(8) =3924694a(9) =19928429a(10) =100145056a(11) =498967875a(12) =2468341930a(13) =12136538329a(14) =59362244596a(15) =289033801519
External references
- oeis: A229454