# A371556 (b-file synthesized from sequence entry) 2 4 3 4 4 7 5 9 6 8 7 8 8 31 9 33 10 16 11 16 12 127 13 129 14 32 15 32 16 511 17 513 18 64 19 64 20 2047 21 2049 22 128 23 128 24 8191 25 8193 26 256 27 256 28 32767 29 32769 30 512 31 512 32 131071 33 131073 34 1024 35 1024 36 524287 37 524289 38 2048 39 2048 40 2097151 41 2097153 42 4096 43 4096 44 8388607 45 8388609 46 8192 47 8192 48 33554431 49 33554433 50 16384 51 16384 52 134217727 53 134217729