# A111047 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 24 5 48 6 32 7 100 8 140 9 840 10 1872 11 54000 12 12960 13 51840 14 533871 15 322371 16 31104 17 709632 18 1921500 19 4147200 20 3701376 21 124416 22 262080 23 2488320 24 21811680 25 403107840 26 146966400 27 2538086400 28 1074954240 29 14370048000 30 415704960000