145216

Appears in sequences

• Triangle read by rows: T(n,k) (n >= 2, 1<=k<=n-1) is the number of permutations p of 1,...,n with max(|p(i)-p(i-1)|, i=2..n) = k.at n=48A064482
• Numbers n such that sigma(n) - sigma(n-1) divides n.at n=15A227305