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| n | a(n) |
|---|---|
| 1 | 4159927 |
| 2 | 8017100977 |
| 3 | 15431888950873 |
| 4 | 29707797738391051 |
| 5 | 57189617044768555919 |
| 6 | 110094177769643072247073 |
| 7 | 211939290252887391404913105 |
| 8 | 407998534122358956249893397419 |
[4159927,8017100977,15431888950873, 29707797738391051,57189617044768555919, 110094177769643072247073, 211939290252887391404913105, 407998534122358956249893397419] |