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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -2044 |
| 3 | -177139 |
| 4 | -4194288 |
| 5 | -48828093 |
| 6 | -362796992 |
| 7 | -1977326615 |
| 8 | -8589934336 |
| 9 | -31381059097 |
| 10 | -99999998976 |
| 11 | -285311668563 |
| 12 | -743008366592 |
| 13 | -1792160385845 |
| 14 | -4049565153280 |
| 15 | -8649755826607 |
| 16 | -17592185978880 |
[1,1,-2044,-177139,-4194288,-48828093,-362796992, -1977326615,-8589934336,-31381059097,-99999998976, -285311668563,-743008366592,-1792160385845, -4049565153280,-8649755826607,-17592185978880] |