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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 11 |
| 2 | 143 |
| 3 | 1716 |
| 4 | 20724 |
| 5 | 248677 |
| 6 | 2985840 |
| 7 | 35829937 |
| 8 | 429979836 |
| 9 | 5159757900 |
| 10 | 61917341772 |
| 11 | 743008099548 |
| 12 | 8916100178843 |
| 13 | 106993202123808 |
| 14 | 1283918461295184 |
| 15 | 15407021535521759 |
| 16 | 184884258855973380 |
| 17 | 2218611106271412996 |
| 18 | 26623333280416468596 |
| 19 | 319479999364994391924 |
[1,11,143,1716,20724,248677,2985840,35829937, 429979836,5159757900,61917341772,743008099548, 8916100178843,106993202123808,1283918461295184, 15407021535521759,184884258855973380, 2218611106271412996,26623333280416468596, 319479999364994391924] |