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.
A269480
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) =4a(1) =54a(2) =574a(3) =6404a(4) =72110a(5) =816583a(6) =9323584a(7) =107089479a(8) =1236171969a(9) =14324836704a(10) =166516037345
External references
- oeis: A269480