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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 5 |
| 4 | 205 |
| 5 | 11301 |
| 6 | 904580 |
| 7 | 101173251 |
| 8 | 15207243828 |
| 9 | 2975725761202 |
| 10 | 738628553556470 |
| 11 | 227636079973503479 |
| 12 | 85554823285296622543 |
| 13 | 38621481302086460057613 |
| 14 | 20669385794052533823555309 |
| 15 | 12966707189875262685801947906 |
| 16 | 9441485712482676603570079314728 |
[1,0,0,5,205,11301,904580,101173251,15207243828, 2975725761202,738628553556470,227636079973503479, 85554823285296622543,38621481302086460057613, 20669385794052533823555309, 12966707189875262685801947906, 9441485712482676603570079314728] |