# A166164 (b-file synthesized from sequence entry) 1 1 2 2 3 5 4 11 5 19 6 37 7 73 8 137 9 277 10 557 11 1069 12 2137 13 4273 14 8369 15 16561 16 33073 17 66161 18 132329 19 263401 20 527081 21 1054169 22 2108339 23 4216691 24 8433011 25 16865971 26 33732019