# A133341 (b-file synthesized from sequence entry) 0 1 1 2 2 1 3 3 4 3 5 2 6 4 7 6 8 8 9 4 10 5 11 10 12 20 13 20 14 8 15 6 16 15 17 40 18 60 19 48 20 16 21 7 22 21 23 70 24 140 25 168 26 112 27 32 28 8 29 28 30 112 31 280 32 448 33 448 34 256 35 64 36 9 37 36 38 168 39 504 40 1008 41 1344 42 1152 43 576 44 128 45 10 46 45 47 240 48 840 49 2016 50 3360 51 3840 52 2880 53 1280 54 256