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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 25 |
| 3 | 658 |
| 4 | 27193 |
| 5 | 1548526 |
| 6 | 112916830 |
| 7 | 10062563610 |
| 8 | 1061196371665 |
| 9 | 129369938790070 |
| 10 | 17909387604206371 |
| 11 | 2776290021986848588 |
| 12 | 476539253976442601735 |
| 13 | 89736215305419802692184 |
| 14 | 18395742890606906720656524 |
| 15 | 4078527943680251523126851306 |
| 16 | 972490249766494185823234587681 |
[1,2,25,658,27193,1548526,112916830,10062563610, 1061196371665,129369938790070,17909387604206371, 2776290021986848588,476539253976442601735, 89736215305419802692184, 18395742890606906720656524, 4078527943680251523126851306, 972490249766494185823234587681] |