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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 510 |
| 5 | 21 |
| 6 | 17490 |
| 7 | 93 |
| 8 | 217 |
| 9 | 381 |
| 10 | 651 |
| 11 | 118879530 |
| 12 | 2667 |
| 13 | 8191 |
| 14 | 11811 |
| 15 | 24573 |
| 16 | 57337 |
| 17 | 82677 |
| 18 | 172011 |
| 19 | 393213 |
| 20 | 761763 |
| 21 | 1572861 |
| 22 | 2752491 |
| 23 | 5332341 |
| 24 | 11010027 |
| 25 | 21845397 |
| 26 | 48758691 |
| 27 | 85327221 |
| 28 | 199753347 |
| 29 | 341310837 |
| 30 | 677207307 |
| 31 | 1398273429 |
[1,2,3,7,510,21,17490,93,217,381,651,118879530, 2667,8191,11811,24573,57337,82677,172011,393213, 761763,1572861,2752491,5332341,11010027,21845397, 48758691,85327221,199753347,341310837,677207307, 1398273429] |