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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 3 |
| 3 | 35 |
| 4 | 763 |
| 5 | 24639 |
| 6 | 1057991 |
| 7 | 56776733 |
| 8 | 3658333743 |
| 9 | 275216215907 |
| 10 | 23680746142603 |
| 11 | 2293972666771246 |
| 12 | 247075461463313473 |
| 13 | 29290441677755271415 |
| 14 | 3790060387175131847103 |
| 15 | 531544501037995251654986 |
[1,3,35,763,24639,1057991,56776733,3658333743, 275216215907,23680746142603,2293972666771246, 247075461463313473,29290441677755271415, 3790060387175131847103,531544501037995251654986] |