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| n | a(n) |
|---|---|
| 1 | 14 |
| 2 | 216 |
| 3 | 339 |
| 4 | 1302 |
| 5 | 6448 |
| 6 | 32388 |
| 7 | 164645 |
| 8 | 844176 |
| 9 | 4319300 |
| 10 | 22083548 |
| 11 | 112975642 |
| 12 | 578036947 |
| 13 | 2957212295 |
| 14 | 15128798774 |
| 15 | 77399122215 |
| 16 | 395975649916 |
| 17 | 2025811842566 |
| 18 | 10364054079218 |
| 19 | 53022552043867 |
| 20 | 271263640161978 |
| 21 | 1387785882638203 |
[14,216,339,1302,6448,32388,164645,844176,4319300, 22083548,112975642,578036947,2957212295, 15128798774,77399122215,395975649916, 2025811842566,10364054079218,53022552043867, 271263640161978,1387785882638203] |