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 | 5 |
| 1 | 20 |
| 2 | 55 |
| 3 | 125 |
| 4 | 251 |
| 5 | 461 |
| 6 | 791 |
| 7 | 1286 |
| 8 | 2001 |
| 9 | 3002 |
| 10 | 4367 |
| 11 | 6187 |
| 12 | 8567 |
| 13 | 11627 |
| 14 | 15503 |
| 15 | 20348 |
| 16 | 26333 |
| 17 | 33648 |
| 18 | 42503 |
| 19 | 53129 |
| 20 | 65779 |
| 21 | 80729 |
| 22 | 98279 |
| 23 | 118754 |
| 24 | 142505 |
| 25 | 169910 |
| 26 | 201375 |
| 27 | 237335 |
| 28 | 278255 |
| 29 | 324631 |