This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
| n | a(n) |
|---|---|
| 1 | 7 |
| 2 | -113 |
| 3 | 4739 |
| 4 | -46804 |
| 5 | 134370 |
| 6 | -614063 |
| 7 | 1669512 |
| 8 | -15474114 |
| 9 | -86232481 |
| 10 | 1080357006 |
| 11 | -8574121305 |
| 12 | -24144614592 |
| 13 | 133884333083 |
| 14 | -2239330253016 |
| 15 | -6347915250018 |
| 16 | 14541933941298 |
| 17 | -42301908155404 |
| 18 | -298013673554972 |
| 19 | 5177473084279656 |
| 20 | -46709468571434452 |
| 21 | 1201667304102142095 |
| 22 | -68508286025632748778 |
| 23 | 850084640720511629243 |
| 24 | -2458418086834560217354 |