# A133200 (b-file synthesized from sequence entry) 1 1 2 1 3 2 4 1 5 6 6 2 7 1 8 12 9 12 10 2 11 1 12 20 13 40 14 20 15 2 16 1 17 30 18 100 19 100 20 30 21 2 22 1 23 42 24 210 25 350 26 210 27 42 28 2 29 1 30 56 31 392 32 980 33 980 34 392 35 56 36 2 37 1 38 72 39 672 40 2352 41 3528 42 2352 43 672 44 72 45 2 46 1 47 90 48 1080 49 5040 50 10584 51 10584 52 5040 53 1080 54 90 55 2