# A134459 (b-file synthesized from sequence entry)
1 2
2 3
3 4
4 7
5 8
6 16
7 31
8 127
9 256
10 8191
11 65536
12 131071
13 524287
14 2147483647
15 2305843009213693951
16 618970019642690137449562111
17 162259276829213363391578010288127
18 170141183460469231731687303715884105727