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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 21 |
| 3 | 2660 |
| 4 | 85492 |
| 5 | 2331618 |
| 6 | 206993090 |
| 7 | 42763599173 |
| 8 | 830409551666 |
| 9 | 118433371523627 |
| 10 | 3709178084192695 |
| 11 | 709564144395637629 |
| 12 | 26474898186117799270 |
| 13 | 3187921008058618254721 |
| 14 | 245528729947540095091943 |
[3,21,2660,85492,2331618,206993090,42763599173, 830409551666,118433371523627,3709178084192695, 709564144395637629,26474898186117799270, 3187921008058618254721,245528729947540095091943] |