# A307545 (b-file synthesized from sequence entry) 0 1 1 1 2 4 3 8 4 17 5 36 6 76 7 160 8 338 9 714 10 1508 11 3184 12 6723 13 14196 14 29976 15 63296 16 133653 17 282217 18 595920 19 1258324 20 2657032 21 5610494 22 11846920 23 25015536 24 52821917 25 111536883 26 235517320 27 497310008 28 1050102149 29 2217358398 30 4682095232 31 9886545984 32 20876079330 33 44081187594 34 93080269957