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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 290 |
| 3 | 290 |
| 4 | 2972 |
| 5 | 19016 |
| 6 | 2972 |
| 7 | 168200 |
| 8 | 1279862 |
| 9 | 1279862 |
| 10 | 168200 |
| 11 | 3090668 |
| 12 | 88662978 |
| 13 | 177942264 |
| 14 | 88662978 |
| 15 | 3090668 |
| 16 | 111188198 |
| 17 | 6215002266 |
| 18 | 31976088817 |
| 19 | 31976088817 |
| 20 | 6215002266 |
| 21 | 111188198 |
| 22 | 2585394080 |
| 23 | 435599518160 |
| 24 | 5253540132125 |
[0,290,290,2972,19016,2972,168200,1279862,1279862, 168200,3090668,88662978,177942264,88662978, 3090668,111188198,6215002266,31976088817, 31976088817,6215002266,111188198,2585394080, 435599518160,5253540132125] |