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 | 5 |
| 6 | 6 |
| 7 | 7 |
| 8 | 8 |
| 9 | 9 |
| 10 | 10 |
| 11 | 11 |
| 12 | 12 |
| 13 | 13 |
| 14 | 244 |
| 15 | 793 |
| 16 | 282007 |
| 17 | 10362564 |
| 18 | 1445712420 |
| 19 | 29546248981 |
| 20 | 164159496751 |
| 21 | 342515735622 |
| 22 | 359057049845 |
| 23 | 216210334578515 |
| 24 | 324075236456868 |
| 25 | 338527182572746 |
| 26 | 338609726265795 |
| 27 | 382789516519507 |
| 28 | 435198066019184 |
| 29 | 526088332647250 |