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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 5 |
| 3 | 11 |
| 4 | 27 |
| 5 | 55 |
| 6 | 23 |
| 7 | 47 |
| 8 | 175 |
| 9 | 351 |
| 10 | 1375 |
| 11 | 2751 |
| 12 | 5823 |
| 13 | 11647 |
| 14 | 25983 |
| 15 | 51967 |
| 16 | 11007 |
| 17 | 22015 |
| 18 | 218623 |
| 19 | 437247 |
| 20 | 1207295 |
| 21 | 2414591 |
| 22 | 7624703 |
| 23 | 15249407 |
| 24 | 28225535 |
| 25 | 56451071 |
| 26 | 88432639 |
| 27 | 176865279 |
| 28 | 150650879 |
| 29 | 301301759 |
| 30 | 1544912895 |
| 31 | 3089825791 |
| 32 | 4524277759 |
| 33 | 9048555519 |
[1,1,5,11,27,55,23,47,175,351,1375,2751,5823, 11647,25983,51967,11007,22015,218623,437247, 1207295,2414591,7624703,15249407,28225535, 56451071,88432639,176865279,150650879,301301759, 1544912895,3089825791,4524277759,9048555519] |