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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 9 |
| 3 | 23 |
| 4 | 73 |
| 5 | 179 |
| 6 | 515 |
| 7 | 1450 |
| 8 | 4024 |
| 9 | 11122 |
| 10 | 31092 |
| 11 | 86816 |
| 12 | 242134 |
| 13 | 674738 |
| 14 | 1881798 |
| 15 | 5248442 |
| 16 | 14637102 |
| 17 | 40816980 |
| 18 | 113827162 |
| 19 | 317437278 |
| 20 | 885253890 |
| 21 | 2468736666 |
| 22 | 6884654742 |
| 23 | 19199525352 |
| 24 | 53542506842 |
| 25 | 149316129526 |
| 26 | 416403812262 |
[8,9,23,73,179,515,1450,4024,11122,31092,86816, 242134,674738,1881798,5248442,14637102,40816980, 113827162,317437278,885253890,2468736666, 6884654742,19199525352,53542506842,149316129526, 416403812262] |