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 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 6 |
| 5 | 13 |
| 6 | 20 |
| 7 | 43 |
| 8 | 58 |
| 9 | 115 |
| 10 | 171 |
| 11 | 323 |
| 12 | 379 |
| 13 | 1034 |
| 14 | 1135 |
| 15 | 2321 |
| 16 | 4327 |
| 17 | 8915 |
| 18 | 9212 |
| 19 | 33939 |
| 20 | 34429 |
| 21 | 128414 |
| 22 | 234017 |
| 23 | 417721 |
| 24 | 418976 |
| 25 | 2931624 |
| 26 | 5096391 |
| 27 | 11770830 |
| 28 | 20357876 |
| 29 | 64853630 |
| 30 | 64858195 |