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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 56896 |
| 6 | 12886944 |
| 7 | 2935906752 |
| 8 | 320496430380 |
| 9 | 18071400219840 |
| 10 | 552526728803616 |
| 11 | 9491105395362624 |
| 12 | 94116098389459776 |
| 13 | 549827720843995776 |
| 14 | 1920594821540759296 |
| 15 | 4051982879111857664 |
[1,0,0,0,0,56896,12886944,2935906752,320496430380, 18071400219840,552526728803616,9491105395362624, 94116098389459776,549827720843995776, 1920594821540759296,4051982879111857664] |