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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 7 |
| 3 | 9 |
| 4 | 25 |
| 5 | 109 |
| 6 | 243 |
| 7 | 352 |
| 8 | 1299 |
| 9 | 6847 |
| 10 | 14993 |
| 11 | 36833 |
| 12 | 51826 |
| 13 | 88659 |
| 14 | 229144 |
| 15 | 317803 |
| 16 | 1500356 |
| 17 | 9319939 |
| 18 | 29460173 |
| 19 | 68240285 |
| 20 | 97700458 |
| 21 | 263641201 |
| 22 | 361341659 |
| 23 | 2070349496 |
| 24 | 14853788131 |
| 25 | 46631713889 |
| 26 | 108117215909 |
| 27 | 262866145707 |
| 28 | 896715653030 |
| 29 | 1159581798737 |
| 30 | 2056297451767 |
[2,7,9,25,109,243,352,1299,6847,14993,36833,51826, 88659,229144,317803,1500356,9319939,29460173, 68240285,97700458,263641201,361341659,2070349496, 14853788131,46631713889,108117215909,262866145707, 896715653030,1159581798737,2056297451767] |