Number of nX6 arrays of permutations of 6 copies of 0..n-1 with every element equal to at least one horizontal neighbor and the top left element equal to 0.
A267723
Number of nX6 arrays of permutations of 6 copies of 0..n-1 with every element equal to at least one horizontal neighbor and the top left element equal to 0.
Terms
- a(0) =1a(1) =12a(2) =588a(3) =93672a(4) =33807456a(5) =22933860480
External references
- oeis: A267723