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 | 15 |
| 3 | 24 |
| 4 | 94 |
| 5 | 145 |
| 6 | 551 |
| 7 | 848 |
| 8 | 3214 |
| 9 | 4945 |
| 10 | 18735 |
| 11 | 28824 |
| 12 | 109198 |
| 13 | 168001 |
| 14 | 636455 |
| 15 | 979184 |
| 16 | 3709534 |
| 17 | 5707105 |
| 18 | 21620751 |
| 19 | 33263448 |
| 20 | 126014974 |