3285270

Appears in sequences

• Triangle read by rows: T(n,k) is the number of permutations of [n] having k adjacent transpositions (0 <= k <= floor(n/2)). An adjacent transposition is a cycle of the form (i, i+1).at n=37A177248
• Number of permutations of [n] having exactly one adjacent 2-cycle.at n=11A370524
• Triangle read by rows: T(n,k) = number of permutations of [n] having exactly one adjacent k-cycle. (n>=1, 1<=k<=n).at n=56A370527