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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 204174432 |
| 7 | 18773441280 |
| 8 | 1041087748932 |
| 9 | 35631847249152 |
| 10 | 840463316342496 |
| 11 | 14666351388933888 |
| 12 | 199513693368801504 |
| 13 | 2202100418758318848 |
| 14 | 20341241482523623200 |
| 15 | 161166280165327084032 |
| 16 | 1117212642637726847058 |
[1,0,0,0,0,0,204174432,18773441280,1041087748932, 35631847249152,840463316342496,14666351388933888, 199513693368801504,2202100418758318848, 20341241482523623200,161166280165327084032, 1117212642637726847058] |