# A175195 (b-file synthesized from sequence entry) 0 1 1 1 2 2 3 2 4 4 5 8 6 16 7 80 8 160 9 480 10 480 11 960 12 960 13 3840 14 7680 15 7680 16 15360 17 92160 18 92160 19 92160 20 460800 21 1843200 22 3686400 23 3686400 24 55296000 25 940032000 26 1880064000 27 37601280000 28 37601280000 29 75202560000 30 75202560000 31 75202560000