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 | 6 |
| 3 | 9 |
| 4 | 23 |
| 5 | 34 |
| 6 | 86 |
| 7 | 127 |
| 8 | 321 |
| 9 | 474 |
| 10 | 1198 |
| 11 | 1769 |
| 12 | 4471 |
| 13 | 6602 |
| 14 | 16686 |
| 15 | 24639 |
| 16 | 62273 |
| 17 | 91954 |
| 18 | 232406 |
| 19 | 343177 |
| 20 | 867351 |
| 21 | 1280754 |
| 22 | 3236998 |
| 23 | 4779839 |
| 24 | 12080641 |
| 25 | 17838602 |
| 26 | 45085566 |
| 27 | 66574569 |
| 28 | 168261623 |