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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 37 |
| 3 | 507 |
| 4 | 6284 |
| 5 | 89527 |
| 6 | 1209990 |
| 7 | 16248436 |
| 8 | 220537819 |
| 9 | 2991520965 |
| 10 | 40512793371 |
| 11 | 548735832406 |
| 12 | 7434530776423 |
| 13 | 100724219721520 |
| 14 | 1364590772374292 |
| 15 | 18486981607134199 |
| 16 | 250455940483033208 |
| 17 | 3393127984714324346 |
[1,37,507,6284,89527,1209990,16248436,220537819, 2991520965,40512793371,548735832406,7434530776423, 100724219721520,1364590772374292, 18486981607134199,250455940483033208, 3393127984714324346] |