105365

Appears in sequences

• Number of permutations that are n-3 "block reversals" away from 12...n.at n=6A007974
• Number of permutations of n elements whose unsigned reversal distance is k.at n=42A115755
• Triangle read by rows: T(n, k) = number of permutations that are k "block reversals" away from 12...n, for n >= 0, and (for n>0) 0 <= k <= n-1.at n=43A300003