# A049926 (b-file synthesized from sequence entry) 1 1 2 3 3 3 4 6 5 10 6 22 7 42 8 84 9 165 10 335 11 668 12 1336 13 2669 14 5334 15 10656 16 21292 17 42542 18 85167 19 170332 20 340664 21 681325 22 1362646 23 2725280 24 5450540 25 10901038 26 21801995 27 43603820 28 87207307 29 174413946 30 348826559 31 697650453 32 1395295584