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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 81 |
| 3 | 71 |
| 4 | 130 |
| 5 | 251 |
| 6 | 497 |
| 7 | 1051 |
| 8 | 2274 |
| 9 | 4999 |
| 10 | 10972 |
| 11 | 24236 |
| 12 | 53509 |
| 13 | 118285 |
| 14 | 261369 |
| 15 | 577860 |
| 16 | 1277311 |
| 17 | 2823836 |
| 18 | 6242370 |
| 19 | 13800217 |
| 20 | 30507579 |
| 21 | 67443317 |
| 22 | 149095642 |
| 23 | 329605433 |
| 24 | 728654642 |
| 25 | 1610832508 |
| 26 | 3561051759 |
| 27 | 7872390883 |
| 28 | 17403425209 |
[8,81,71,130,251,497,1051,2274,4999,10972,24236, 53509,118285,261369,577860,1277311,2823836, 6242370,13800217,30507579,67443317,149095642, 329605433,728654642,1610832508,3561051759, 7872390883,17403425209] |