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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 10 |
| 3 | 37 |
| 4 | 95 |
| 5 | 306 |
| 6 | 1442 |
| 7 | 5871 |
| 8 | 21832 |
| 9 | 89400 |
| 10 | 411068 |
| 11 | 1770984 |
| 12 | 7282331 |
| 13 | 31250009 |
| 14 | 139497681 |
| 15 | 604440671 |
| 16 | 2568314200 |
| 17 | 11116864094 |
| 18 | 48801680753 |
| 19 | 211521061837 |
| 20 | 909708854837 |
| 21 | 3943937945239 |
| 22 | 17186537187421 |
| 23 | 74492402195670 |
[8,10,37,95,306,1442,5871,21832,89400,411068, 1770984,7282331,31250009,139497681,604440671, 2568314200,11116864094,48801680753,211521061837, 909708854837,3943937945239,17186537187421, 74492402195670] |