# A109960 (b-file synthesized from sequence entry) 0 1 1 1 2 1 3 1 4 5 5 1 6 1 7 15 8 9 9 1 10 1 11 35 12 45 13 13 14 1 15 1 16 70 17 165 18 91 19 17 20 1 21 1 22 126 23 495 24 455 25 153 26 21 27 1 28 1 29 210 30 1287 31 1820 32 969 33 231 34 25 35 1 36 1 37 330 38 3003 39 6188 40 4845 41 1771 42 325 43 29 44 1 45 1 46 495 47 6435 48 18564 49 20349 50 10626 51 2925 52 435 53 33 54 1 55 1 56 715 57 12870 58 50388 59 74613 60 53130