# A091270 (b-file synthesized from sequence entry)
0 0
1 2
2 5
3 13
4 29
5 61
6 125
7 253
8 509
9 1021
10 2045
11 4093
12 8189
13 16381
14 32765
15 65533
16 131069
17 262141
18 524285
19 1048573
20 2097149
21 4194301
22 8388605
23 16777213
24 33554429
25 67108861
26 134217725
27 268435453
28 536870909
29 1073741821