The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | -2 |
| 3 | 2 |
| 4 | -1 |
| 5 | -7 |
| 6 | 8 |
| 7 | -14 |
| 8 | 1 |
| 9 | 11 |
| 10 | -23 |
| 11 | 43 |
| 12 | -54 |
| 13 | 38 |
| 14 | 17 |
| 15 | -55 |
| 16 | 162 |
| 17 | -198 |
| 18 | 257 |
| 19 | -175 |
| 20 | 69 |
| 21 | 141 |
| 22 | -518 |
| 23 | 764 |
| 24 | -1049 |
| 25 | 1215 |
| 26 | -1241 |
| 27 | 549 |
| 28 | 161 |
| 29 | -1625 |
| 30 | 3192 |
| 31 | -5176 |
| 32 | 6782 |
| 33 | -7568 |
| 34 | 7267 |
| 35 | -4263 |
| 36 | -788 |
| 37 | 8394 |
| 38 | -17866 |
| 39 | 29782 |
| 40 | -39041 |
| 41 | 46101 |
| 42 | -45857 |
| 43 | 36551 |
| 44 | -14591 |
| 45 | -20937 |
| 46 | 70638 |
| 47 | -129520 |
| 48 | 190994 |
| 49 | -245846 |
| 50 | 280560 |
[1,1,-2,2,-1,-7,8,-14,1,11,-23,43,-54,38,17,-55, 162,-198,257,-175,69,141,-518,764,-1049,1215, -1241,549,161,-1625,3192,-5176,6782,-7568,7267, -4263,-788,8394,-17866,29782,-39041,46101,-45857, 36551,-14591,-20937,70638,-129520,190994,-245846, 280560] |