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| n | a(n) |
|---|---|
| 1 | 3 |
| 2 | 5 |
| 3 | -8 |
| 4 | 35 |
| 5 | -52 |
| 6 | 118 |
| 7 | -320 |
| 8 | 1597 |
| 9 | -2016 |
| 10 | 6616 |
| 11 | -16064 |
| 12 | 40516 |
| 13 | -122552 |
| 14 | 381606 |
| 15 | -903176 |
| 16 | 4389807 |
| 17 | -7597004 |
| 18 | 22835416 |
| 19 | -61172890 |
| 20 | 188526110 |
| 21 | -486889660 |
| 22 | 1550995910 |
| 23 | -4093173788 |
| 24 | 11608277912 |
| 25 | -33815484714 |
| 26 | 105179650108 |
| 27 | -279683446078 |
| 28 | 883705997682 |
| 29 | -2366564864546 |
[3,5,-8,35,-52,118,-320,1597,-2016,6616,-16064, 40516,-122552,381606,-903176,4389807,-7597004, 22835416,-61172890,188526110,-486889660, 1550995910,-4093173788,11608277912,-33815484714, 105179650108,-279683446078,883705997682, -2366564864546] |