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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 26 |
| 5 | 57 |
| 6 | 117 |
| 7 | 242 |
| 8 | 493 |
| 9 | 993 |
| 10 | 2002 |
| 11 | 4033 |
| 12 | 8126 |
| 13 | 16285 |
| 14 | 32605 |
| 15 | 65314 |
| 16 | 130753 |
| 17 | 261693 |
| 18 | 523548 |
| 19 | 1047651 |
| 20 | 2095936 |
| 21 | 4192528 |
| 22 | 8385745 |
| 23 | 16773441 |
| 24 | 33549368 |
| 25 | 67102171 |
| 26 | 134205859 |
| 27 | 268420752 |
| 28 | 536851559 |
| 29 | 1073713543 |
| 30 | 2147437849 |
| 31 | 4294914773 |
| 32 | 8589852992 |
[1,2,5,13,26,57,117,242,493,993,2002,4033,8126, 16285,32605,65314,130753,261693,523548,1047651, 2095936,4192528,8385745,16773441,33549368, 67102171,134205859,268420752,536851559,1073713543, 2147437849,4294914773,8589852992] |