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| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 0 |
| 2 | -63 |
| 3 | -728 |
| 4 | -4095 |
| 5 | -15624 |
| 6 | -46655 |
| 7 | -117648 |
| 8 | -262143 |
| 9 | -531440 |
| 10 | -999999 |
| 11 | -1771560 |
| 12 | -2985983 |
| 13 | -4826808 |
| 14 | -7529535 |
| 15 | -11390624 |
| 16 | -16777215 |
| 17 | -24137568 |
| 18 | -34012223 |
| 19 | -47045880 |
| 20 | -63999999 |
| 21 | -85766120 |
| 22 | -113379903 |
| 23 | -148035888 |
| 24 | -191102975 |
| 25 | -244140624 |
| 26 | -308915775 |
| 27 | -387420488 |
| 28 | -481890303 |
[1,0,-63,-728,-4095,-15624,-46655,-117648,-262143, -531440,-999999,-1771560,-2985983,-4826808, -7529535,-11390624,-16777215,-24137568,-34012223, -47045880,-63999999,-85766120,-113379903, -148035888,-191102975,-244140624,-308915775, -387420488,-481890303] |