Number of permutations of n copies of 1..7 with all adjacent differences <= 2 in absolute value.
A177325
Number of permutations of n copies of 1..7 with all adjacent differences <= 2 in absolute value.
Terms
- a(0) =1a(1) =56a(2) =148146a(3) =788946320
External references
- oeis: A177325