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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | -4 |
| 2 | 4 |
| 3 | -4 |
| 4 | 20 |
| 5 | -28 |
| 6 | 20 |
| 7 | -52 |
| 8 | 84 |
| 9 | -104 |
| 10 | 156 |
| 11 | -180 |
| 12 | 308 |
| 13 | -460 |
| 14 | 468 |
| 15 | -684 |
| 16 | 1028 |
| 17 | -1308 |
| 18 | 1592 |
| 19 | -2084 |
| 20 | 2940 |
| 21 | -3668 |
| 22 | 4564 |
| 23 | -5716 |
| 24 | 7556 |
| 25 | -9912 |
| 26 | 11484 |
| 27 | -14616 |
| 28 | 19252 |
| 29 | -23548 |
| 30 | 28316 |
| 31 | -35188 |
| 32 | 44724 |
| 33 | -54532 |
| 34 | 65996 |
| 35 | -79948 |
| 36 | 99784 |
| 37 | -122796 |
| 38 | 143972 |
| 39 | -175372 |
| 40 | 216524 |
| 41 | -259996 |
| 42 | 308004 |
| 43 | -371140 |
[1,-4,4,-4,20,-28,20,-52,84,-104,156,-180,308, -460,468,-684,1028,-1308,1592,-2084,2940,-3668, 4564,-5716,7556,-9912,11484,-14616,19252,-23548, 28316,-35188,44724,-54532,65996,-79948,99784, -122796,143972,-175372,216524,-259996,308004, -371140] |