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) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 9 |
| 3 | -10 |
| 4 | -24 |
| 5 | 36 |
| 6 | 65 |
| 7 | -102 |
| 8 | -153 |
| 9 | 232 |
| 10 | 327 |
| 11 | -468 |
| 12 | -663 |
| 13 | 918 |
| 14 | 1287 |
| 15 | -1768 |
| 16 | -2391 |
| 17 | 3240 |
| 18 | 4289 |
| 19 | -5676 |
| 20 | -7488 |
| 21 | 9758 |
| 22 | 12753 |
| 23 | -16524 |
| 24 | -21250 |
| 25 | 27300 |
| 26 | 34758 |
| 27 | -44128 |
| 28 | -55896 |
| 29 | 70380 |
| 30 | 88519 |
| 31 | -110874 |
| 32 | -138285 |
| 33 | 172136 |
| 34 | 213315 |