# A133497 (b-file synthesized from sequence entry) 1 4 2 7 3 10 4 14 5 20 6 27 7 35 8 45 9 58 10 73 11 91 12 113 13 138 14 168 15 203 16 244 17 291 18 345 19 408 20 481 21 563 22 658 23 766 24 888 25 1027 26 1184 27 1361 28 1561 29 1786 30 2038 31 2321 32 2637 33 2990 34 3385 35 3824 36 4312 37 4855 38 5457 39 6124 40 6863 41 7679 42 8581 43 9576 44 10672 45 11879 46 13207 47 14666 48 16267 49 18024 50 19949