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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | -5 |
| 3 | 10 |
| 4 | -45 |
| 5 | 110 |
| 6 | -421 |
| 7 | 1148 |
| 8 | -4037 |
| 9 | 11697 |
| 10 | -39250 |
| 11 | 117736 |
| 12 | -384657 |
| 13 | 1177235 |
| 14 | -3787218 |
| 15 | 11727187 |
| 16 | -37389217 |
| 17 | 116571621 |
| 18 | -369712938 |
| 19 | 1157315631 |
| 20 | -3659226205 |
| 21 | 11481436216 |
| 22 | -36237006073 |
| 23 | 113856243558 |
| 24 | -358967583724 |
| 25 | 1128781753801 |
| 26 | -3556642214960 |
| 27 | 11189229179710 |
[1,-5,10,-45,110,-421,1148,-4037,11697,-39250, 117736,-384657,1177235,-3787218,11727187, -37389217,116571621,-369712938,1157315631, -3659226205,11481436216,-36237006073,113856243558, -358967583724,1128781753801,-3556642214960, 11189229179710] |