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| n | a(n) |
|---|---|
| 1 | -1 |
| 2 | -3 |
| 3 | -4 |
| 4 | 1 |
| 5 | 49 |
| 6 | -42 |
| 7 | -57 |
| 8 | -31 |
| 9 | 140 |
| 10 | 497 |
| 11 | -815 |
| 12 | -758 |
| 13 | 311 |
| 14 | 3021 |
| 15 | 3796 |
| 16 | -13759 |
| 17 | -7039 |
| 18 | 16086 |
| 19 | 45295 |
| 20 | 3681 |
| 21 | -204684 |
| 22 | -10431 |
| 23 | 365377 |
| 24 | 507914 |
| 25 | -618001 |
| 26 | -2642435 |
| 27 | 1427468 |
| 28 | 6214881 |
| 29 | 3341553 |
| 30 | -16185322 |
| 31 | -27959273 |
| 32 | 42625665 |
| 33 | 85186108 |
| 34 | -23867663 |
| 35 | -286766767 |
| 36 | -193092086 |
| 37 | 854985639 |
| 38 | 900760205 |
[-1,-3,-4,1,49,-42,-57,-31,140,497,-815,-758,311, 3021,3796,-13759,-7039,16086,45295,3681,-204684, -10431,365377,507914,-618001,-2642435,1427468, 6214881,3341553,-16185322,-27959273,42625665, 85186108,-23867663,-286766767,-193092086, 854985639,900760205] |