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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 27 |
| 2 | 467 |
| 3 | 6615 |
| 4 | 83811 |
| 5 | 990927 |
| 6 | 11193547 |
| 7 | 122534775 |
| 8 | 1311833171 |
| 9 | 13818932127 |
| 10 | 143838758427 |
| 11 | 1483810444935 |
| 12 | 15202640928931 |
| 13 | 154948536206127 |
| 14 | 1572891821232107 |
| 15 | 15916318178611095 |
| 16 | 160663127276015091 |
[1,27,467,6615,83811,990927,11193547,122534775, 1311833171,13818932127,143838758427,1483810444935, 15202640928931,154948536206127,1572891821232107, 15916318178611095,160663127276015091] |