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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 6 |
| 5 | 36 |
| 6 | 42 |
| 7 | 1764 |
| 8 | 1806 |
| 9 | 3261636 |
| 10 | 3263442 |
| 11 | 10650053687364 |
| 12 | 10650056950806 |
| 13 | 113423713055411194304049636 |
| 14 | 113423713055421844361000442 |
| 15 | 12864938683278671740537145884937248491231415124195364 |
| 16 | 12864938683278671740537145998360961546653259485195806 |
[1,1,2,4,6,36,42,1764,1806,3261636,3263442, 10650053687364,10650056950806, 113423713055411194304049636, 113423713055421844361000442, 12864938683278671740537145884937248491231415124195\ 364, 12864938683278671740537145998360961546653259485195\ 806] |