# A075179 (b-file synthesized from sequence entry) 0 1 1 6 2 6 3 60 4 10 5 252 6 84 7 360 8 90 9 660 10 44 11 32760 12 5460 13 2520 14 360 15 12240 16 34 17 14364 18 1596 19 19800 20 13860 21 91080 22 920 23 982800 24 81900 25 19656 26 1512 27 48720 28 1160 29 1718640 30 114576 31 1884960 32 117810 33 21420 34 140 35 69090840 36 109668 37 17784 38 936 39 1623600 40 9020