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| n | a(n) |
|---|---|
| 1 | 88 |
| 2 | 542 |
| 3 | 3357 |
| 4 | 21068 |
| 5 | 132152 |
| 6 | 831331 |
| 7 | 5226955 |
| 8 | 32887826 |
| 9 | 206882773 |
| 10 | 1301662324 |
| 11 | 8189126429 |
| 12 | 51523012575 |
| 13 | 324155480581 |
| 14 | 2039448592803 |
| 15 | 12831234573276 |
| 16 | 80728397862748 |
| 17 | 507905656032918 |
| 18 | 3195511917733141 |
| 19 | 20104693948800956 |
[88,542,3357,21068,132152,831331,5226955,32887826, 206882773,1301662324,8189126429,51523012575, 324155480581,2039448592803,12831234573276, 80728397862748,507905656032918,3195511917733141, 20104693948800956] |