Number of permutations of n copies of 1..7 with all adjacent differences <= 1 in absolute value.
A177319
Number of permutations of n copies of 1..7 with all adjacent differences <= 1 in absolute value.
Terms
- a(0) =1a(1) =2a(2) =148a(3) =41618a(4) =16699380a(5) =8039989002
External references
- oeis: A177319