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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 4 |
| 5 | 13 |
| 6 | 34 |
| 7 | 84 |
| 8 | 116 |
| 9 | 382 |
| 10 | 1384 |
| 11 | 1984 |
| 12 | 2498 |
| 13 | 7102 |
| 14 | 11944 |
| 15 | 22276 |
| 16 | 65242 |
| 17 | 105118 |
| 18 | 186574 |
| 19 | 414001 |
| 20 | 888856 |