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 | 7 |
| 3 | 15 |
| 4 | 37 |
| 5 | 69 |
| 6 | 188 |
| 7 | 254 |
| 8 | 19274 |
| 9 | 20798 |
| 10 | 22380 |
| 11 | 26439 |
| 12 | 28219 |
| 13 | 30057 |
| 14 | 189067 |
| 15 | 279203 |
| 16 | 369162 |
| 17 | 1517727 |
| 18 | 1528134 |
| 19 | 2964593 |
| 20 | 3978491 |
| 21 | 4645227 |
| 22 | 4701433 |
| 23 | 4757977 |
| 24 | 4895880 |
| 25 | 4953578 |
| 26 | 5011614 |
| 27 | 5062958 |
| 28 | 7200291 |
| 29 | 20845013 |
| 30 | 51370845 |
| 31 | 101900477 |
| 32 | 135141272 |
| 33 | 246185759 |
| 34 | 358784011 |
| 35 | 646164289 |