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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 968 |
| 2 | 156816 |
| 3 | 10286936 |
| 4 | 368804128 |
| 5 | 8453107432 |
| 6 | 136585481648 |
| 7 | 1663935545976 |
| 8 | 16051394232896 |
| 9 | 127269237312008 |
| 10 | 853941394691792 |
| 11 | 4962895187697048 |
| 12 | 25459406230618976 |
| 13 | 117088340731041064 |
| 14 | 489035476964671472 |
| 15 | 1875154363323009208 |
| 16 | 6661774086773638272 |
| 17 | 22100369343864328264 |
[1,968,156816,10286936,368804128,8453107432, 136585481648,1663935545976,16051394232896, 127269237312008,853941394691792,4962895187697048, 25459406230618976,117088340731041064, 489035476964671472,1875154363323009208, 6661774086773638272,22100369343864328264] |