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 | 53 |
| 2 | 239 |
| 3 | 6719 |
| 4 | 7321 |
| 5 | 15737 |
| 6 | 30763 |
| 7 | 38977 |
| 8 | 41981 |
| 9 | 44987 |
| 10 | 587107 |
| 11 | 661121 |
| 12 | 751133 |
| 13 | 1051177 |
| 14 | 1229201 |
| 15 | 1297211 |
| 16 | 1303213 |
| 17 | 1327217 |
| 18 | 1823281 |
| 19 | 1913293 |
| 20 | 1999303 |
| 21 | 2131321 |
| 22 | 2179327 |
| 23 | 2207329 |
| 24 | 2239333 |
| 25 | 2371351 |
| 26 | 2689391 |
| 27 | 2699393 |
| 28 | 3067439 |