# A247281 (b-file synthesized from sequence entry)
0 0
1 5
2 15
3 65
4 255
5 1025
6 4095
7 16385
8 65535
9 262145
10 1048575
11 4194305
12 16777215
13 67108865
14 268435455
15 1073741825
16 4294967295
17 17179869185
18 68719476735
19 274877906945
20 1099511627775
21 4398046511105
22 17592186044415