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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 10 |
| 2 | 82 |
| 3 | 674 |
| 4 | 5540 |
| 5 | 45538 |
| 6 | 374316 |
| 7 | 3076828 |
| 8 | 25291120 |
| 9 | 207889674 |
| 10 | 1708825732 |
| 11 | 14046322404 |
| 12 | 115458919774 |
| 13 | 949057110644 |
| 14 | 7801124426174 |
| 15 | 64124215108032 |
| 16 | 527092600834054 |
| 17 | 4332631742719370 |
| 18 | 35613662169258228 |
| 19 | 292739611493034596 |
| 20 | 2406281042646218328 |
[1,10,82,674,5540,45538,374316,3076828,25291120, 207889674,1708825732,14046322404,115458919774, 949057110644,7801124426174,64124215108032, 527092600834054,4332631742719370, 35613662169258228,292739611493034596, 2406281042646218328] |