# A328857 (b-file synthesized from sequence entry) 1 1 2 2 3 12 4 120 5 240 6 2520 7 10920 8 21840 9 32760 10 65520 11 600600 12 900900 13 1801800 14 3603600 15 4455360 16 8910720 17 17821440 18 46060560 19 69090840 20 92121120 21 126977760 22 138181680 23 245044800 24 414545040 25 490089600 26 507911040 27 1015822080 28 1266665400 29 1523733120 30 2533330800