# A172252 (b-file synthesized from sequence entry)
1 -1
2 7
3 23
4 55
5 119
6 247
7 503
8 1015
9 2039
10 4087
11 8183
12 16375
13 32759
14 65527
15 131063
16 262135
17 524279
18 1048567
19 2097143
20 4194295
21 8388599
22 16777207
23 33554423
24 67108855
25 134217719
26 268435447
27 536870903
28 1073741815
29 2147483639