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| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | 58 |
| 3 | 302 |
| 4 | 4203 |
| 5 | 41919 |
| 6 | 406412 |
| 7 | 3922630 |
| 8 | 37847050 |
| 9 | 366073677 |
| 10 | 3539729256 |
| 11 | 34225117612 |
| 12 | 330920692737 |
| 13 | 3199615235589 |
| 14 | 30936683427950 |
| 15 | 299122948811816 |
| 16 | 2892181883282837 |
| 17 | 27964142570392887 |
| 18 | 270381764365092475 |
[7,58,302,4203,41919,406412,3922630,37847050, 366073677,3539729256,34225117612,330920692737, 3199615235589,30936683427950,299122948811816, 2892181883282837,27964142570392887, 270381764365092475] |