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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 10 |
| 5 | 253 |
| 6 | 12068 |
| 7 | 1052793 |
| 8 | 169505868 |
| 9 | 51046350021 |
| 10 | 29184353055900 |
| 11 | 32122563615242615 |
| 12 | 68867440268165982320 |
| 13 | 290155715157676330952559 |
| 14 | 2417761590648159731258579164 |
| 15 | 40013923822242935823157820555477 |
| 16 | 1318910080336893719646370269435043184 |
[1,0,0,1,10,253,12068,1052793,169505868, 51046350021,29184353055900,32122563615242615, 68867440268165982320,290155715157676330952559, 2417761590648159731258579164, 40013923822242935823157820555477, 1318910080336893719646370269435043184] |