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| n | a(n) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 6 |
| 3 | -33 |
| 4 | -512 |
| 5 | 19405 |
| 6 | 181116 |
| 7 | -45817541 |
| 8 | 771776384 |
| 9 | 280415588121 |
| 10 | -23151651942500 |
| 11 | -3217963989270569 |
| 12 | 816268626535923936 |
| 13 | 38087192839910816485 |
| 14 | -43268389662374707851552 |
| 15 | 2822720920753640236252875 |
| 16 | 3297662826737476255127428096 |
| 17 | -833876355494162903256716734927 |
[0,1,6,-33,-512,19405,181116,-45817541,771776384, 280415588121,-23151651942500,-3217963989270569, 816268626535923936,38087192839910816485, -43268389662374707851552, 2822720920753640236252875, 3297662826737476255127428096, -833876355494162903256716734927] |