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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 9 |
| 2 | 82 |
| 3 | 747 |
| 4 | 7065 |
| 5 | 69098 |
| 6 | 694272 |
| 7 | 7127865 |
| 8 | 74468546 |
| 9 | 789265125 |
| 10 | 8466019380 |
| 11 | 91736269053 |
| 12 | 1002710879409 |
| 13 | 11042713886256 |
| 14 | 122413333216960 |
| 15 | 1364880618458565 |
| 16 | 15296452128008100 |
| 17 | 172218124701600741 |
| 18 | 1946960139291303222 |
| 19 | 22092883135853433030 |
| 20 | 251545025683283255770 |
[0,9,82,747,7065,69098,694272,7127865,74468546, 789265125,8466019380,91736269053,1002710879409, 11042713886256,122413333216960,1364880618458565, 15296452128008100,172218124701600741, 1946960139291303222,22092883135853433030, 251545025683283255770] |