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Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 4 |
| 1 | -4 |
| 2 | 8 |
| 3 | -32 |
| 4 | -32 |
| 5 | -64 |
| 6 | -256 |
| 7 | 256 |
| 8 | -512 |
| 9 | 2048 |
| 10 | 2048 |
| 11 | 4096 |
| 12 | 16384 |
| 13 | -16384 |
| 14 | 32768 |
| 15 | -131072 |
| 16 | -131072 |
| 17 | -262144 |
| 18 | -1048576 |
| 19 | 1048576 |
| 20 | -2097152 |
| 21 | 8388608 |
| 22 | 8388608 |
| 23 | 16777216 |
| 24 | 67108864 |
| 25 | -67108864 |
| 26 | 134217728 |
| 27 | -536870912 |
| 28 | -536870912 |
| 29 | -1073741824 |
[4,-4,8,-32,-32,-64,-256,256,-512,2048,2048,4096, 16384,-16384,32768,-131072,-131072,-262144, -1048576,1048576,-2097152,8388608,8388608, 16777216,67108864,-67108864,134217728,-536870912, -536870912,-1073741824] |