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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 25 |
| 5 | 57 |
| 6 | 113 |
| 7 | 241 |
| 8 | 482 |
| 9 | 1001 |
| 10 | 1993 |
| 11 | 4037 |
| 12 | 8073 |
| 13 | 16305 |
| 14 | 32545 |
| 15 | 65309 |
| 16 | 130593 |
| 17 | 261825 |
| 18 | 523449 |
| 19 | 1047641 |
| 20 | 2095137 |
| 21 | 4192861 |
| 22 | 8385069 |
| 23 | 16773521 |
| 24 | 33546837 |
| 25 | 67102757 |
| 26 | 134203609 |
| 27 | 268420133 |
| 28 | 536840409 |
| 29 | 1073717413 |
| 30 | 2147428353 |
| 31 | 4294903873 |
| 32 | 8589862400 |
[1,2,5,13,25,57,113,241,482,1001,1993,4037,8073, 16305,32545,65309,130593,261825,523449,1047641, 2095137,4192861,8385069,16773521,33546837, 67102757,134203609,268420133,536840409,1073717413, 2147428353,4294903873,8589862400] |