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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 7 |
| 3 | 1 |
| 4 | -7 |
| 5 | -1 |
| 6 | 23 |
| 7 | 1 |
| 8 | -121 |
| 9 | -1 |
| 10 | 481 |
| 11 | 5 |
| 12 | -3015581 |
| 13 | -691 |
| 14 | 67337 |
| 15 | 7 |
| 16 | -30135767 |
| 17 | -3617 |
| 18 | 10946836702 |
| 19 | 43867 |
| 20 | -369658793327 |
| 21 | -174611 |
| 22 | 1633542173485 |
| 23 | 854513 |
| 24 | -20836336617617359 |
| 25 | -236364091 |
| 26 | 28614002185051 |
| 27 | 8553103 |
| 28 | -10503257306519121539 |
| 29 | -23749461029 |
[1,1,7,1,-7,-1,23,1,-121,-1,481,5,-3015581,-691, 67337,7,-30135767,-3617,10946836702,43867, -369658793327,-174611,1633542173485,854513, -20836336617617359,-236364091,28614002185051, 8553103,-10503257306519121539,-23749461029] |