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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 6 |
| 3 | 13 |
| 4 | 29 |
| 5 | 57 |
| 6 | 121 |
| 7 | 240 |
| 8 | 496 |
| 9 | 1000 |
| 10 | 2017 |
| 11 | 4057 |
| 12 | 8137 |
| 13 | 16294 |
| 14 | 32646 |
| 15 | 65401 |
| 16 | 130929 |
| 17 | 261649 |
| 18 | 523918 |
| 19 | 1047681 |
| 20 | 2096413 |
| 21 | 4192389 |
| 22 | 8387170 |
| 23 | 16773805 |
| 24 | 33551370 |
| 25 | 67102081 |
| 26 | 134211974 |
| 27 | 268421638 |
| 28 | 536858721 |
| 29 | 1073709201 |
| 30 | 2147459221 |
| 31 | 4294911850 |
| 32 | 8589870852 |
[1,2,6,13,29,57,121,240,496,1000,2017,4057,8137, 16294,32646,65401,130929,261649,523918,1047681, 2096413,4192389,8387170,16773805,33551370, 67102081,134211974,268421638,536858721,1073709201, 2147459221,4294911850,8589870852] |