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| n | a(n) |
|---|---|
| 1 | 6 |
| 2 | 105 |
| 3 | 85085 |
| 4 | 215656441 |
| 5 | 2928046583754721 |
| 6 | 50774191064678342417 |
| 7 | 8893257265710151560293840093 |
| 8 | 456136734556614681201275816106457 |
| 9 | 413876828984538288243690385880996726353717 |
[6,105,85085,215656441,2928046583754721, 50774191064678342417,8893257265710151560293840093, 456136734556614681201275816106457, 413876828984538288243690385880996726353717] |