# A356911 (b-file synthesized from sequence entry) 0 1 1 0 2 0 3 0 4 24 5 60 6 240 7 1260 8 -12096 9 -120960 10 -1144800 11 -11642400 12 190270080 13 4670265600 14 81378198720 15 1348668921600 16 -880532674560 17 -406217626214400 18 -13255586359142400 19 -343166884178227200 20 -3137937973466572800 21 72862796986940620800