# A028328 (b-file synthesized from sequence entry) 0 2 1 4 2 6 3 8 4 12 5 10 6 20 7 30 8 40 9 14 10 42 11 70 12 16 13 56 14 112 15 140 16 18 17 72 18 168 19 252 20 90 21 240 22 420 23 504 24 22 25 110 26 330 27 660 28 924 29 24 30 132 31 440 32 990 33 1584 34 1848 35 26 36 156 37 572 38 1430 39 2574 40 3432 41 28 42 182 43 728 44 2002 45 4004 46 6006 47 6864 48 210 49 910 50 2730 51 10010 52 12870 53 32