# A155996 (b-file synthesized from sequence entry) 0 1 1 2 2 3 3 6 4 13 5 25 6 50 7 101 8 201 9 402 10 804 11 1608 12 3217 13 6434 14 12868 15 25736 16 51472 17 102944 18 205887 19 411775 20 823550 21 1647099 22 3294199 23 6588397 24 13176795 25 26353589 26 52707179 27 105414357 28 210828714 29 421657428 30 843314857 31 1686629713 32 3373259426 33 6746518852