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 | 3 |
| 2 | 17 |
| 3 | 26 |
| 4 | 99 |
| 5 | 485 |
| 6 | 577 |
| 7 | 1351 |
| 8 | 3363 |
| 9 | 19601 |
| 10 | 24335 |
| 11 | 70226 |
| 12 | 114243 |
| 13 | 470449 |
| 14 | 665857 |
| 15 | 930249 |
| 16 | 2862251 |
| 17 | 3650401 |
| 18 | 3880899 |
| 19 | 22619537 |
| 20 | 39480499 |
| 21 | 130576328 |
| 22 | 131836323 |
| 23 | 189750626 |
| 24 | 456335045 |
| 25 | 768398401 |
| 26 | 1184384449 |
| 27 | 4478554083 |
| 28 | 9863382151 |
| 29 | 10850138895 |
| 30 | 26102926097 |