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| n | a(n) |
|---|---|
| 2 | 1 |
| 3 | 8 |
| 4 | 151 |
| 5 | 8083 |
| 6 | 70568 |
| 7 | 8910416 |
| 8 | 39392803 |
| 9 | 7701058213 |
| 10 | 2325990648824 |
| 11 | 43563061207573 |
| 12 | 19999898090377928 |
| 13 | 2566793589644124992 |
| 14 | 10627327735475477203 |
| 15 | 2179055220073884519235 |
| 16 | 630486036620986837882904 |
| 17 | 646895254841829205782412249 |
| 18 | 5802709167332592724735012664 |
[1,8,151,8083,70568,8910416,39392803,7701058213, 2325990648824,43563061207573,19999898090377928, 2566793589644124992,10627327735475477203, 2179055220073884519235,630486036620986837882904, 646895254841829205782412249, 5802709167332592724735012664] |