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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -1 |
| 3 | 1 |
| 4 | -4 |
| 5 | 1 |
| 6 | -10 |
| 7 | 9 |
| 8 | 1 |
| 9 | -20 |
| 10 | 64 |
| 11 | 1 |
| 12 | -35 |
| 13 | 259 |
| 14 | -225 |
| 15 | 1 |
| 16 | -56 |
| 17 | 784 |
| 18 | -2304 |
| 19 | 1 |
| 20 | -84 |
| 21 | 1974 |
| 22 | -12916 |
| 23 | 11025 |
| 24 | 1 |
| 25 | -120 |
| 26 | 4368 |
| 27 | -52480 |
| 28 | 147456 |
| 29 | 1 |
| 30 | -165 |
| 31 | 8778 |
| 32 | -172810 |
| 33 | 1057221 |
| 34 | -893025 |
| 35 | 1 |
| 36 | -220 |
| 37 | 16368 |
| 38 | -489280 |
| 39 | 5395456 |
| 40 | -14745600 |
| 41 | 1 |
| 42 | -286 |
| 43 | 28743 |
| 44 | -1234948 |
| 45 | 21967231 |
| 46 | -128816766 |
| 47 | 108056025 |
| 48 | 1 |
| 49 | -364 |
| 50 | 48048 |
| 51 | -2846272 |
| 52 | 75851776 |
| 53 | -791691264 |
| 54 | 2123366400 |
[1,1,-1,1,-4,1,-10,9,1,-20,64,1,-35,259,-225,1, -56,784,-2304,1,-84,1974,-12916,11025,1,-120,4368, -52480,147456,1,-165,8778,-172810,1057221,-893025, 1,-220,16368,-489280,5395456,-14745600,1,-286, 28743,-1234948,21967231,-128816766,108056025,1, -364,48048,-2846272,75851776,-791691264, 2123366400] |