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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 3 |
| 3 | -3 |
| 4 | -18 |
| 5 | -33 |
| 6 | -15 |
| 7 | 84 |
| 8 | 261 |
| 9 | 333 |
| 10 | -138 |
| 11 | -1557 |
| 12 | -3315 |
| 13 | -2436 |
| 14 | 6153 |
| 15 | 24009 |
| 16 | 36390 |
| 17 | 1431 |
| 18 | -129639 |
| 19 | -323292 |
| 20 | -318819 |
| 21 | 400725 |
| 22 | 2149686 |
| 23 | 3807795 |
| 24 | 1476405 |
| 25 | -10310388 |
| 26 | -30697599 |
| 27 | -37588047 |
| 28 | 20103078 |
| 29 | 186854271 |
| 30 | 384871329 |
| 31 | 260548788 |
| 32 | -769001739 |
| 33 | -2840006499 |
[3,3,-3,-18,-33,-15,84,261,333,-138,-1557,-3315, -2436,6153,24009,36390,1431,-129639,-323292, -318819,400725,2149686,3807795,1476405,-10310388, -30697599,-37588047,20103078,186854271,384871329, 260548788,-769001739,-2840006499] |