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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 5 |
| 3 | 13 |
| 4 | 19 |
| 5 | 61 |
| 6 | 107 |
| 7 | 521 |
| 8 | 1279 |
| 9 | 2281 |
| 10 | 4253 |
| 11 | 9689 |
| 12 | 11213 |
| 13 | 21701 |
| 14 | 44497 |
| 15 | 110503 |
| 16 | 216091 |
| 17 | 859433 |
| 18 | 1398269 |
| 19 | 3021377 |
| 20 | 13466917 |
| 21 | 24036583 |
| 22 | 30402457 |
| 23 | 37156667 |
| 24 | 43112609 |
[2,5,13,19,61,107,521,1279,2281,4253,9689,11213, 21701,44497,110503,216091,859433,1398269,3021377, 13466917,24036583,30402457,37156667,43112609] |