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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 12 |
| 4 | 291 |
| 5 | 10243 |
| 6 | 460632 |
| 7 | 24830853 |
| 8 | 1546531419 |
| 9 | 108716955930 |
| 10 | 8489321379453 |
| 11 | 727903248520260 |
| 12 | 67935651633100242 |
| 13 | 6853940772480079902 |
| 14 | 743261410711529857459 |
| 15 | 86224073603509482578211 |
| 16 | 10656471864208782754351131 |
| 17 | 1398062659621217619155428209 |
[1,1,12,291,10243,460632,24830853,1546531419, 108716955930,8489321379453,727903248520260, 67935651633100242,6853940772480079902, 743261410711529857459,86224073603509482578211, 10656471864208782754351131, 1398062659621217619155428209] |