# A322782 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 36 4 720 5 23400 6 1123200 7 74440800 8 6509318400 9 725829724800 10 100511918784000 11 16922530756454400 12 3404178048774758400 13 806369627582929612800 14 222159405758654317363200 15 70435689828806256514560000 16 25463217531292911649057996800 17 10411540182139235537714555289600