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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 3 |
| 3 | 13 |
| 4 | 29 |
| 5 | 42 |
| 6 | 365 |
| 7 | 407 |
| 8 | 1179 |
| 9 | 5123 |
| 10 | 11425 |
| 11 | 16548 |
| 12 | 143809 |
| 13 | 160357 |
| 14 | 464523 |
| 15 | 2018449 |
| 16 | 4501421 |
| 17 | 6519870 |
| 18 | 56660381 |
| 19 | 63180251 |
| 20 | 183020883 |
| 21 | 795263783 |
| 22 | 1773548449 |
| 23 | 2568812232 |
| 24 | 22324046305 |
| 25 | 24892858537 |