Number of 3Xn arrays containing n copies of 0..3-1 avoiding the pattern down-up in every row and equal-up in every column.
A269647
Number of 3Xn arrays containing n copies of 0..3-1 avoiding the pattern down-up in every row and equal-up in every column.
Terms
- a(0) =6a(1) =74a(2) =574a(3) =4564a(4) =41526a(5) =419516a(6) =4351224a(7) =45696410a(8) =485785550a(9) =5235947490a(10) =57045797346a(11) =626684612988
External references
- oeis: A269647