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| n | a(n) |
|---|---|
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 1 |
| 5 | 623360743125120 |
| 6 | 24935177268489106332174087326700 |
| 7 | 11251027489082268563385494644966780470231583948800 |
| 8 | 54940328391880874295213395391276439149434232556146955107851631952500 |
[0,0,0,1,623360743125120, 24935177268489106332174087326700, 11251027489082268563385494644966780470231583948800\ , 54940328391880874295213395391276439149434232556146\ 955107851631952500] |