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| n | a(n) |
|---|---|
| 1 | 90 |
| 2 | 990 |
| 3 | 11610 |
| 4 | 139158 |
| 5 | 1686042 |
| 6 | 20537766 |
| 7 | 250834914 |
| 8 | 3067525350 |
| 9 | 37537522362 |
| 10 | 459492912054 |
| 11 | 5625465499458 |
| 12 | 68876427444102 |
| 13 | 843332143519674 |
| 14 | 10326055803410934 |
| 15 | 126436970898858978 |
| 16 | 1548158980998752262 |
[90,990,11610,139158,1686042,20537766,250834914, 3067525350,37537522362,459492912054,5625465499458, 68876427444102,843332143519674,10326055803410934, 126436970898858978,1548158980998752262] |