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 | 13 |
| 4 | 5 |
| 5 | 53 |
| 6 | 149 |
| 7 | 1237 |
| 8 | 1109 |
| 9 | 853 |
| 10 | 2389 |
| 11 | 3413 |
| 12 | 17749 |
| 13 | 128341 |
| 14 | 70997 |
| 15 | 251221 |
| 16 | 415061 |
| 17 | 218453 |
| 18 | 2708821 |
| 19 | 27088213 |
| 20 | 29709653 |
| 21 | 3495253 |
| 22 | 85284181 |
| 23 | 13981013 |
| 24 | 39146837 |
| 25 | 794121557 |
| 26 | 1498764629 |
| 27 | 492131669 |
| 28 | 626349397 |
| 29 | 13779686741 |