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| n | a(n) |
|---|---|
| 1 | 606 |
| 2 | 3988 |
| 3 | 25808 |
| 4 | 173121 |
| 5 | 1190637 |
| 6 | 8178097 |
| 7 | 56422648 |
| 8 | 390661554 |
| 9 | 2704080467 |
| 10 | 18732156320 |
| 11 | 129837515003 |
| 12 | 899875661504 |
| 13 | 6237831734078 |
| 14 | 43243690039607 |
| 15 | 299782052613422 |
| 16 | 2078270386909730 |
| 17 | 14408014447228498 |
| 18 | 99886103229478687 |
[606,3988,25808,173121,1190637,8178097,56422648, 390661554,2704080467,18732156320,129837515003, 899875661504,6237831734078,43243690039607, 299782052613422,2078270386909730, 14408014447228498,99886103229478687] |