154615096

Appears in sequences

• Number of permutations p of [n] such that min_{j=1..n} |p(j)-j| = 1.at n=12A296050
• Number T(n,k) of permutations p of [n] such that min_{j=1..n} |p(j)-j| = k; triangle T(n,k), n >= 0, 0 <= k <= floor(n/2), read by rows.at n=43A299789