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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 16 |
| 3 | 92 |
| 4 | 536 |
| 5 | 7016 |
| 6 | 90232 |
| 7 | 3569728 |
| 8 | 101519408 |
| 9 | 13171648732 |
| 10 | 783070626724 |
| 11 | 349693561626416 |
| 12 | 41247666769702640 |
| 13 | 65777806787688875844 |
| 14 | 14782056897493046845072 |
| 15 | 86537979599825962734398012 |
[2,16,92,536,7016,90232,3569728,101519408, 13171648732,783070626724,349693561626416, 41247666769702640,65777806787688875844, 14782056897493046845072, 86537979599825962734398012] |