# A272268 (b-file synthesized from sequence entry) 1 1 2 4 3 9 4 20 5 41 6 85 7 173 8 349 9 701 10 1405 11 2813 12 5629 13 11261 14 22525 15 45053 16 90113 17 180232 18 360466 19 720937 20 1441877 21 2883761 22 5767525 23 11535053 24 23070112 25 46140228 26 92280457 27 184560921 28 369121849 29 738243700 30 1476487402 31 2952974809 32 5905949620 33 11811899241