# A084508 (b-file synthesized from sequence entry)
0 0
1 1
2 3
3 9
4 33
5 129
6 513
7 2049
8 8193
9 32769
10 131073
11 524289
12 2097153
13 8388609
14 33554433
15 134217729
16 536870913
17 2147483649
18 8589934593
19 34359738369
20 137438953473
21 549755813889
22 2199023255553
23 8796093022209
24 35184372088833