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| n | a(n) |
|---|---|
| 0 | 2 |
| 1 | -1 |
| 2 | -1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 1 |
| 6 | -1 |
| 7 | -15 |
| 8 | -15 |
| 9 | -1 |
| 10 | 1 |
| 11 | 78 |
| 12 | 108 |
| 13 | 78 |
| 14 | 1 |
| 15 | -1 |
| 16 | -635 |
| 17 | -935 |
| 18 | -935 |
| 19 | -635 |
| 20 | -1 |
| 21 | 1 |
| 22 | 7605 |
| 23 | 12315 |
| 24 | 9600 |
| 25 | 12315 |
| 26 | 7605 |
| 27 | 1 |
| 28 | -1 |
| 29 | -123396 |
| 30 | -225071 |
| 31 | -147700 |
| 32 | -147700 |
| 33 | -225071 |
| 34 | -123396 |
| 35 | -1 |
| 36 | 1 |
| 37 | 2570484 |
| 38 | 5190598 |
| 39 | 3588508 |
| 40 | 1936340 |
| 41 | 3588508 |
| 42 | 5190598 |
[2,-1,-1,1,4,1,-1,-15,-15,-1,1,78,108,78,1,-1, -635,-935,-935,-635,-1,1,7605,12315,9600,12315, 7605,1,-1,-123396,-225071,-147700,-147700,-225071, -123396,-1,1,2570484,5190598,3588508,1936340, 3588508,5190598] |