# A062777 (b-file synthesized from sequence entry) 1 1 2 5 3 9 4 16 5 33 6 63 7 129 8 256 9 512 10 1023 11 2049 12 4096 13 8193 14 16383 15 32767 16 65536 17 131073 18 262144 19 524289 20 1048576 21 2097151 22 4194303 23 8388609 24 16777216 25 33554432 26 67108863 27 134217728 28 268435456 29 536870913 30 1073741825 31 2147483649