Number of permutations of n copies of 1..7 with all adjacent differences <= 3 in absolute value.
A177328
Number of permutations of n copies of 1..7 with all adjacent differences <= 3 in absolute value.
Terms
- a(0) =1a(1) =428a(2) =6068622a(3) =171548183912
External references
- oeis: A177328