# A117520 (b-file synthesized from sequence entry) 1 0 2 1 3 3 4 6 5 10 6 15 7 21 8 28 9 55 10 66 11 78 12 91 13 105 14 120 15 136 16 190 17 210 18 231 19 253 20 276 21 300 22 325 23 406 24 435 25 465 26 496 27 528 28 561 29 595 30 703 31 741 32 780 33 820 34 861 35 903 36 946 37 1081 38 1128 39 1176 40 1225 41 1275 42 1326 43 1378 44 1540 45 1596 46 1653 47 1711 48 1770 49 1830 50 1891 51 2080 52 2145