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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 13 |
| 6 | 18 |
| 7 | 28 |
| 8 | 118 |
| 9 | 194 |
| 10 | 289 |
| 11 | 338 |
| 12 | 353 |
| 13 | 354 |
| 14 | 419 |
| 15 | 489 |
| 16 | 528 |
| 17 | 609 |
| 18 | 769 |
| 19 | 1269 |
| 20 | 1299 |
| 21 | 2081 |
| 22 | 4890 |
| 23 | 4891 |
| 24 | 9113 |
| 25 | 18575 |
| 26 | 18702 |
| 27 | 20759 |
| 28 | 35084 |
| 29 | 1874374 |
| 30 | 338749352 |
| 31 | 2415951874 |