# A199932 (b-file synthesized from sequence entry) 1 1 2 3 3 5 4 12 5 17 6 47 7 65 8 169 9 279 10 645 11 1025 12 2698 13 4097 14 9917 15 17345 16 39698 17 65537 18 161395 19 262145 20 624004 21 1089007 22 2449881 23 4194305 24 10097733 25 16812683 26 38754747 27 69117097 28 155178266 29 268435457 30 629929761 31 1073741825 32 2459703907 33 4400500499 34 9756737721