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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 8 |
| 4 | 151 |
| 5 | 293 |
| 6 | 586 |
| 7 | 11711 |
| 8 | 23332 |
| 9 | 46565 |
| 10 | 931291 |
| 11 | 1862582 |
| 12 | 3724264 |
| 13 | 7447538 |
| 14 | 148949851 |
| 15 | 297898793 |
| 16 | 595787596 |
| 17 | 11915660921 |
| 18 | 23831312842 |
| 19 | 47662625675 |
| 20 | 953251523491 |
| 21 | 1906502047082 |
| 22 | 3813004003174 |
| 23 | 7626008006258 |
| 24 | 152520151025251 |
[1,2,4,8,151,293,586,11711,23332,46565,931291, 1862582,3724264,7447538,148949851,297898793, 595787596,11915660921,23831312842,47662625675, 953251523491,1906502047082,3813004003174, 7626008006258,152520151025251] |