The OEIS is supported by the many generous donors to the OEIS Foundation.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
Reminder: The OEIS is hiring a new managing editor, and the application deadline is January 26.
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 4 |
| 2 | -999 |
| 3 | -58924 |
| 4 | -1047951 |
| 5 | -9762500 |
| 6 | -60450551 |
| 7 | -282397124 |
| 8 | -1073351199 |
| 9 | -3484831276 |
| 10 | -9990234375 |
| 11 | -25888596476 |
| 12 | -61673223599 |
| 13 | -136637788724 |
| 14 | -283151139351 |
| 15 | -546132812500 |
| 16 | -946923737151 |
| 17 | -1253054447324 |
| 18 | 244230039001 |
[1,4,-999,-58924,-1047951,-9762500,-60450551, -282397124,-1073351199,-3484831276,-9990234375, -25888596476,-61673223599,-136637788724, -283151139351,-546132812500,-946923737151, -1253054447324,244230039001] |