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| n | a(n) |
|---|---|
| 1 | 8 |
| 2 | 928 |
| 3 | 2935 |
| 4 | 21691 |
| 5 | 163682 |
| 6 | 1113793 |
| 7 | 8803975 |
| 8 | 65762626 |
| 9 | 500606134 |
| 10 | 3871912412 |
| 11 | 29641292709 |
| 12 | 228724010089 |
| 13 | 1764555059811 |
| 14 | 13604894698893 |
| 15 | 105055149573703 |
| 16 | 810888251301564 |
| 17 | 6260188499559851 |
| 18 | 48338915060171029 |
| 19 | 373223482079535759 |
[8,928,2935,21691,163682,1113793,8803975,65762626, 500606134,3871912412,29641292709,228724010089, 1764555059811,13604894698893,105055149573703, 810888251301564,6260188499559851, 48338915060171029,373223482079535759] |