# A133326 (b-file synthesized from sequence entry) 1 2 2 8 3 20 4 50 5 118 6 292 7 688 8 1702 9 4010 10 9920 11 23372 12 57818 13 136222 14 336988 15 793960 16 1964110 17 4627538 18 11447672 19 26971268 20 66721922 21 157200070 22 388883860 23 916229152 24 2266581238 25 5340174842 26 13210603568 27 31124819900 28 76997040170 29 181408744558 30 448771637452