# A131788 (b-file synthesized from sequence entry) 1 1 2 2 3 3 4 6 5 18 6 22 7 74 8 173 9 350 10 627 11 1903 12 3980 13 11139 14 29437 15 72720 16 108312 17 337079 18 379735 19 988163 20 1354929 21 4458118 22 12200929 23 32148649 24 78234718 25 208109020 26 546549127 27 1108402372 28 3055896646 29 8105184898 30 8151267237 31 29457007624