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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 1 | 5 |
| 2 | 0 |
| 3 | 1 |
| 4 | -3 |
| 5 | 7 |
| 6 | -15 |
| 7 | 31 |
| 8 | -63 |
| 9 | 126 |
| 10 | -245 |
| 11 | 455 |
| 12 | -791 |
| 13 | 1253 |
| 14 | -1715 |
| 15 | 1715 |
| 16 | 0 |
| 17 | -6419 |
| 18 | 24157 |
| 19 | -67081 |
| 20 | 162925 |
| 21 | -364609 |
| 22 | 767977 |
| 23 | -1535953 |
| 24 | 2922679 |
| 25 | -5273325 |
| 26 | 8931521 |
| 27 | -13886641 |
| 28 | 18775981 |
| 29 | -18399241 |
| 30 | -2035799 |
| 31 | 79594559 |
| 32 | -300540195 |
| 33 | 855744647 |
| 34 | -2151510735 |
| 35 | 5025003039 |
[5,0,1,-3,7,-15,31,-63,126,-245,455,-791,1253, -1715,1715,0,-6419,24157,-67081,162925,-364609, 767977,-1535953,2922679,-5273325,8931521, -13886641,18775981,-18399241,-2035799,79594559, -300540195,855744647,-2151510735,5025003039] |