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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 10 |
| 3 | 34 |
| 4 | 83 |
| 5 | 258 |
| 6 | 865 |
| 7 | 2651 |
| 8 | 8041 |
| 9 | 25114 |
| 10 | 78356 |
| 11 | 242335 |
| 12 | 750668 |
| 13 | 2331147 |
| 14 | 7233125 |
| 15 | 22428585 |
| 16 | 69571574 |
| 17 | 215837630 |
| 18 | 669523807 |
| 19 | 2076792418 |
| 20 | 6442276953 |
| 21 | 19984194983 |
| 22 | 61990893369 |
| 23 | 192295766302 |
| 24 | 596503969480 |
| 25 | 1850361240315 |
| 26 | 5739832532268 |
[1,10,34,83,258,865,2651,8041,25114,78356,242335, 750668,2331147,7233125,22428585,69571574, 215837630,669523807,2076792418,6442276953, 19984194983,61990893369,192295766302,596503969480, 1850361240315,5739832532268] |