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 | 5 |
| 3 | 9 |
| 4 | 13 |
| 5 | 35 |
| 6 | 39 |
| 7 | 286 |
| 8 | 290 |
| 9 | 381 |
| 10 | 385 |
| 11 | 866 |
| 12 | 4376 |
| 13 | 10461 |
| 14 | 13506 |
| 15 | 19709 |
| 16 | 50925 |
| 17 | 139046 |
| 18 | 144086 |
| 19 | 188517 |
| 20 | 623114 |
| 21 | 6815124 |
| 22 | 7226204 |
| 23 | 7647853 |
| 24 | 8970817 |
| 25 | 42716373 |
| 26 | 64176516 |
| 27 | 189403472 |
| 28 | 240240118 |
| 29 | 463852538 |
| 30 | 520740373 |