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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 6 |
| 4 | 6 |
| 5 | 98 |
| 6 | 8 |
| 7 | 885 |
| 8 | 545 |
| 9 | 4294 |
| 10 | 1 |
| 11 | 542971 |
| 12 | 567942 |
| 13 | 4985950 |
| 14 | 34463095 |
| 15 | 817539359 |
| 16 | 3335212865 |
| 17 | 1825278551 |
| 18 | 60542888969 |
| 19 | 351980024812 |
| 20 | 6758401 |
| 21 | 13316726728064 |
| 22 | 355067132000559 |
| 23 | 10940544943498235 |
| 24 | 100371505302529555 |
| 25 | 98630474467606263 |
[0,0,6,6,98,8,885,545,4294,1,542971,567942, 4985950,34463095,817539359,3335212865,1825278551, 60542888969,351980024812,6758401,13316726728064, 355067132000559,10940544943498235, 100371505302529555,98630474467606263] |