# A174216 (b-file synthesized from sequence entry) 1 15 2 27 3 63 4 123 5 279 6 567 7 1143 8 2307 9 4623 10 9447 11 18927 12 38283 13 77139 14 154839 15 309747 16 620463 17 1241823 18 2483847 19 4967739 20 9935607 21 19892547 22 39785199