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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -3 |
| 3 | -1 |
| 4 | 29 |
| 5 | -44 |
| 6 | -265 |
| 7 | 1114 |
| 8 | 1369 |
| 9 | -19076 |
| 10 | 20388 |
| 11 | 250977 |
| 12 | -875281 |
| 13 | -2116594 |
| 14 | 19136754 |
| 15 | -7765108 |
| 16 | -306092007 |
| 17 | 830209808 |
| 18 | 3388957208 |
| 19 | -22266676364 |
| 20 | -8185922076 |
| 21 | 413223401045 |
| 22 | -814031607979 |
| 23 | -5513566634947 |
| 24 | 27558060911119 |
| 25 | 35395095404776 |
[1,1,-3,-1,29,-44,-265,1114,1369,-19076,20388, 250977,-875281,-2116594,19136754,-7765108, -306092007,830209808,3388957208,-22266676364, -8185922076,413223401045,-814031607979, -5513566634947,27558060911119,35395095404776] |