Number of 3Xn arrays containing n copies of 0..3-1 with every element equal to at least one vertical or antidiagonal neighbor and the top left element equal to 0.
A268160
Number of 3Xn arrays containing n copies of 0..3-1 with every element equal to at least one vertical or antidiagonal neighbor and the top left element equal to 0.
Terms
- a(0) =0a(1) =0a(2) =8a(3) =14a(4) =52a(5) =1516a(6) =7582a(7) =46338a(8) =501270a(9) =3535396a(10) =25480614a(11) =220369120a(12) =1716544860a(13) =13279246254a(14) =108919001860a(15) =873463942418
External references
- oeis: A268160