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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 9 |
| 3 | 85 |
| 4 | 833 |
| 5 | 8361 |
| 6 | 85305 |
| 7 | 880685 |
| 8 | 9173505 |
| 9 | 96220561 |
| 10 | 1014889769 |
| 11 | 10753517061 |
| 12 | 114375683009 |
| 13 | 1220435354425 |
| 14 | 13058529727833 |
| 15 | 140059477112925 |
| 16 | 1505357362548737 |
| 17 | 16209464357137953 |
| 18 | 174827809500822345 |
| 19 | 1888383038494338485 |
| 20 | 20424130116241366593 |
| 21 | 221164921352046545609 |
| 22 | 2397512484385887298681 |
[1,9,85,833,8361,85305,880685,9173505,96220561, 1014889769,10753517061,114375683009,1220435354425, 13058529727833,140059477112925,1505357362548737, 16209464357137953,174827809500822345, 1888383038494338485,20424130116241366593, 221164921352046545609,2397512484385887298681] |