Number of permutations of n elements containing a 3-cycle.

A027617

Number of permutations of n elements containing a 3-cycle.

Terms

    a(0) =0a(1) =0a(2) =0a(3) =2a(4) =8a(5) =40a(6) =200a(7) =1400a(8) =11200a(9) =103040a(10) =1030400a(11) =11334400a(12) =135766400a(13) =1764963200a(14) =24709484800a(15) =370687116800

External references