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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | 3 |
| 2 | 10 |
| 3 | 29 |
| 4 | 82 |
| 5 | 227 |
| 6 | 618 |
| 7 | 1661 |
| 8 | 4418 |
| 9 | 11651 |
| 10 | 30506 |
| 11 | 79389 |
| 12 | 205522 |
| 13 | 529635 |
| 14 | 1359434 |
| 15 | 3476989 |
| 16 | 8865026 |
| 17 | 22538755 |
| 18 | 57157578 |
| 19 | 144615709 |
| 20 | 365127634 |
| 21 | 920110051 |
| 22 | 2314564522 |
| 23 | 5812911741 |
| 24 | 14576950082 |
| 25 | 36503608707 |
| 26 | 91294323178 |
| 27 | 228049363229 |
| 28 | 569017421650 |
| 29 | 1418290058723 |
[2,3,10,29,82,227,618,1661,4418,11651,30506,79389, 205522,529635,1359434,3476989,8865026,22538755, 57157578,144615709,365127634,920110051,2314564522, 5812911741,14576950082,36503608707,91294323178, 228049363229,569017421650,1418290058723] |