# A123121 (b-file synthesized from sequence entry) 1 1 2 3 3 7 4 15 5 31 6 63 7 127 8 255 9 511 10 1024 11 2050 12 4102 13 8206 14 16414 15 32830 16 65662 17 131326 18 262654 19 525310 20 1050622 21 2101246 22 4202494 23 8404990 24 16809982 25 33619966 26 67239934 27 134479870 28 268959742 29 537919486 30 1075838974 31 2151677950 32 4303355902 33 8606711806