# A138776 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 4 5 5 6 6 7 1 8 7 9 5 10 8 11 15 12 9 13 35 14 10 15 70 16 11 17 126 18 1 19 12 20 210 21 8 22 13 23 330 24 36 25 14 26 495 27 120 28 15 29 715 30 330 31 16 32 1001 33 792 34 1 35 17 36 1365 37 1716 38 11 39 18 40 1820 41 3432 42 66 43 19 44 2380 45 6435 46 286 47 20 48 3060 49 11440 50 1001