# A176993 (b-file synthesized from sequence entry) 0 -1 1 3 2 6 3 -20 4 12 5 210 6 40 7 360 8 -3024 9 180 10 840 11 55440 12 1008 13 3360 14 60480 15 -1235520 16 6720 17 18144 18 151200 19 32432400 20 51840 21 120960 22 665280 23 19958400 24 -980179200 25 453600 26 950400 27 3991680 28 51891840 29 33522128640 30 4435200 31 8553600 32 29652480 33 242161920 34 10897286400 35 -1279935820800