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| n | a(n) |
|---|---|
| 1 | 13 |
| 2 | 276 |
| 3 | 4374 |
| 4 | 78434 |
| 5 | 1385901 |
| 6 | 24486926 |
| 7 | 434357928 |
| 8 | 7703929911 |
| 9 | 136731507572 |
| 10 | 2425791860562 |
| 11 | 43046580346073 |
| 12 | 763911860239486 |
| 13 | 13556371257153923 |
| 14 | 240573778392292406 |
| 15 | 4269273591050766800 |
| 16 | 75763525863454457902 |
[13,276,4374,78434,1385901,24486926,434357928, 7703929911,136731507572,2425791860562, 43046580346073,763911860239486,13556371257153923, 240573778392292406,4269273591050766800, 75763525863454457902] |