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| n | a(n) |
|---|---|
| 3 | 615 |
| 4 | 1250 |
| 5 | 3087 |
| 6 | 85702 |
| 7 | 832207 |
| 8 | 964411 |
| 9 | 75516831 |
| 10 | 87752352 |
| 11 | 2247987605 |
| 12 | 32183551352 |
| 13 | 622344644563 |
| 14 | 721258992031 |
| 15 | 56497436627651 |
[615,1250,3087,85702,832207,964411,75516831, 87752352,2247987605,32183551352,622344644563, 721258992031,56497436627651] |