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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 0 |
| 3 | 1 |
| 4 | -3 |
| 5 | 6 |
| 6 | -10 |
| 7 | 16 |
| 8 | -28 |
| 9 | 56 |
| 10 | -120 |
| 11 | 256 |
| 12 | -528 |
| 13 | 1056 |
| 14 | -2080 |
| 15 | 4096 |
| 16 | -8128 |
| 17 | 16256 |
| 18 | -32640 |
| 19 | 65535 |
| 20 | -131308 |
| 21 | 262446 |
| 22 | -523260 |
| 23 | 1039720 |
| 24 | -2053600 |
| 25 | 4014856 |
| 26 | -7726160 |
| 27 | 14539590 |
| 28 | -26553320 |
| 29 | 46611620 |
| 30 | -77558760 |
| 31 | 119394740 |
| 32 | -161230720 |
| 33 | 161230720 |
| 34 | 0 |
| 35 | -623001635 |
[2,0,1,-3,6,-10,16,-28,56,-120,256,-528,1056, -2080,4096,-8128,16256,-32640,65535,-131308, 262446,-523260,1039720,-2053600,4014856,-7726160, 14539590,-26553320,46611620,-77558760,119394740, -161230720,161230720,0,-623001635] |