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 | 34 |
| 2 | 142 |
| 3 | 574 |
| 4 | 2302 |
| 5 | 9214 |
| 6 | 36862 |
| 7 | 147454 |
| 8 | 589822 |
| 9 | 2359294 |
| 10 | 9437182 |
| 11 | 37748734 |
| 12 | 150994942 |
| 13 | 603979774 |
| 14 | 2415919102 |
| 15 | 9663676414 |
| 16 | 38654705662 |
| 17 | 154618822654 |
| 18 | 618475290622 |
| 19 | 2473901162494 |
| 20 | 9895604649982 |
| 21 | 39582418599934 |
| 22 | 158329674399742 |
| 23 | 633318697598974 |
| 24 | 2533274790395902 |