# A205540 (b-file synthesized from sequence entry) 0 6 1 11 2 21 3 41 4 81 5 161 6 321 7 641 8 1281 9 2561 10 5121 11 10241 12 20471 13 34661 14 81453 15 163601 16 327451 17 424061 18 1309739 19 1517681 20 5233273 21 10482317 22 20961533 23 20059721 24 76468885 25 167647487 26 332173603 27 669748975 28 1341711425 29 1018132049 30 3886817251 31 3809954797 32 13773689903 33 42836883235 34 82509485265 35 171748700625