# A028330 (b-file synthesized from sequence entry) 0 2 1 2 2 6 3 2 4 8 5 2 6 20 7 10 8 2 9 30 10 12 11 2 12 70 13 42 14 14 15 2 16 112 17 56 18 16 19 2 20 252 21 168 22 72 23 18 24 2 25 420 26 240 27 90 28 20 29 2 30 924 31 660 32 330 33 110 34 22 35 2 36 1584 37 990 38 440 39 132 40 24 41 2 42 3432 43 2574 44 1430 45 572 46 156 47 26 48 2 49 6006 50 4004 51 2002 52 728 53 182 54 28 55 2 56 12870 57 10010 58 6006 59 2730