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| n | a(n) |
|---|---|
| 1 | 17 |
| 2 | 136 |
| 3 | 1632 |
| 4 | 20808 |
| 5 | 283968 |
| 6 | 4022064 |
| 7 | 58619808 |
| 8 | 871959240 |
| 9 | 13176430176 |
| 10 | 201599248032 |
| 11 | 3115626937056 |
| 12 | 48551851084080 |
| 13 | 761890617915840 |
| 14 | 12026987582075856 |
| 15 | 190828203433892736 |
| 16 | 3041324491793194440 |
| 17 | 48661191875666868480 |
| 18 | 781282469552728498992 |
| 19 | 12582759772902701307744 |
[17,136,1632,20808,283968,4022064,58619808, 871959240,13176430176,201599248032,3115626937056, 48551851084080,761890617915840,12026987582075856, 190828203433892736,3041324491793194440, 48661191875666868480,781282469552728498992, 12582759772902701307744] |