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| n | a(n) |
|---|---|
| 0 | 8 |
| 1 | 33 |
| 2 | 536 |
| 3 | 2177 |
| 4 | 35368 |
| 5 | 143649 |
| 6 | 2333752 |
| 7 | 9478657 |
| 8 | 153992264 |
| 9 | 625447713 |
| 10 | 10161155672 |
| 11 | 41270070401 |
| 12 | 670482282088 |
| 13 | 2723199198753 |
| 14 | 44241669462136 |
| 15 | 179689877047297 |
| 16 | 2919279702218888 |
| 17 | 11856808685922849 |
| 18 | 192628218676984472 |
| 19 | 782369683393860737 |
| 20 | 12710543152978756264 |
[8,33,536,2177,35368,143649,2333752,9478657, 153992264,625447713,10161155672,41270070401, 670482282088,2723199198753,44241669462136, 179689877047297,2919279702218888, 11856808685922849,192628218676984472, 782369683393860737,12710543152978756264] |