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 | 2 |
| 2 | 5 |
| 3 | 6 |
| 4 | 13 |
| 5 | 15 |
| 6 | 20 |
| 7 | 34 |
| 8 | 83 |
| 9 | 174 |
| 10 | 246 |
| 11 | 911 |
| 12 | 1065 |
| 13 | 1084 |
| 14 | 1455 |
| 15 | 1490 |
| 16 | 1546 |
| 17 | 3674 |
| 18 | 8644 |
| 19 | 9556 |
| 20 | 15287 |
| 21 | 15378 |
| 22 | 15826 |
| 23 | 25670 |