# A022029 (b-file synthesized from sequence entry) 0 4 1 13 2 42 3 135 4 433 5 1388 6 4449 7 14260 8 45706 9 146496 10 469546 11 1504979 12 4823727 13 15460908 14 49554976 15 158832563 16 509086778 17 1631714194 18 5229935889 19 16762880107 20 53728029453 21 172207945799 22 551957272549