2403588

Appears in sequences

• Number of linear arrangements of n blue, n red and n green items such that there are no adjacent items of the same color.at n=8A110706
• T(n,k) = number of linear arrays of n 1's, n -1's, and k 0's such that no two adjacent elements are equal.at n=80A283613
• Number of permutations of 8 copies of 1..n with no element equal to another within a distance of 1.at n=3A322096