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 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 14 |
| 5 | 28 |
| 6 | 49 |
| 7 | 71 |
| 8 | 79 |
| 9 | 46 |
| 10 | -70 |
| 11 | -329 |
| 12 | -812 |
| 13 | -1624 |
| 14 | -2897 |
| 15 | -4793 |
| 16 | -7507 |
| 17 | -11270 |
| 18 | -16352 |
| 19 | -23065 |
| 20 | -31766 |
| 21 | -42860 |
| 22 | -56803 |
| 23 | -74105 |
| 24 | -95333 |
| 25 | -121114 |
| 26 | -152138 |
| 27 | -189161 |
| 28 | -233008 |
| 29 | -284576 |
| 30 | -344837 |
| 31 | -414841 |
| 32 | -495719 |
| 33 | -588686 |
| 34 | -695044 |