214446

Appears in sequences

• Euler transform of 3 2 1 1 1 1 1 1...at n=28A029859
• The number of permutations p of {1,...,n} such that p(1)=1, p(n)=n, and |p(i)-p(i+1)| is in {1,2,3} for all i from 1 to n-1.at n=18A249665