# A347830 (b-file synthesized from sequence entry) 0 1 1 3 2 8 3 27 4 67 5 189 6 509 7 1329 8 3344 9 8694 10 22062 11 54756 12 136741 13 335103 14 822277 15 2016738 16 4872787 17 11711655 18 28253743 19 67319328 20 160333627 21 381350646 22 901272326 23 2121969771 24 4991176893 25 11689645776 26 27305992220 27 63705989106 28 148106539514 29 343371565449 30 795524336390