Number of permutations of n copies of 1..5 with all adjacent differences <= 1 in absolute value.

A177317

Number of permutations of n copies of 1..5 with all adjacent differences <= 1 in absolute value.

Terms

    a(0) =1a(1) =2a(2) =48a(3) =2288a(4) =135040a(5) =8956752a(6) =640160976a(7) =48203722464

External references