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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 7 |
| 6 | 18 |
| 7 | 22 |
| 8 | 27 |
| 9 | 31 |
| 10 | 78 |
| 11 | 94 |
| 12 | 115 |
| 13 | 171 |
| 14 | 402 |
| 15 | 438 |
| 16 | 507 |
| 17 | 1363 |
| 18 | 1467 |
| 19 | 2263 |
| 20 | 2283 |
| 21 | 3627 |
| 22 | 9247 |
| 23 | 9955 |