Number of 4Xn arrays containing n copies of 0..4-1 avoiding the pattern down-up in every row and equal-up in every column.
A269648
Number of 4Xn arrays containing n copies of 0..4-1 avoiding the pattern down-up in every row and equal-up in every column.
Terms
- a(0) =24a(1) =1880a(2) =68876a(3) =2316638a(4) =94747953a(5) =4581555620a(6) =234861499280
External references
- oeis: A269648