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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 1 |
| 6 | 28 |
| 7 | 1716 |
| 8 | 203490 |
| 9 | 52451256 |
| 10 | 29248649430 |
| 11 | 36519676207704 |
| 12 | 103619293824707388 |
| 13 | 681222021538453426360 |
| 14 | 10526080837282875691177000 |
| 15 | 387340445158332035685509830240 |
| 16 | 34306348668342682111244774082795555 |
| 17 | 7379087300345635546662027722168990277849 |
[1,1,0,0,0,1,28,1716,203490,52451256,29248649430, 36519676207704,103619293824707388, 681222021538453426360,10526080837282875691177000, 387340445158332035685509830240, 34306348668342682111244774082795555, 7379087300345635546662027722168990277849] |