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 | 5 |
| 5 | 10 |
| 6 | 17 |
| 7 | 21 |
| 8 | 28 |
| 9 | 38 |
| 10 | 50 |
| 11 | 86 |
| 12 | 88 |
| 13 | 100 |
| 14 | 375 |
| 15 | 408 |
| 16 | 630 |
| 17 | 646 |
| 18 | 1241 |
| 19 | 1860 |
| 20 | 4359 |
| 21 | 15444 |
| 22 | 17916 |
| 23 | 74901 |
| 24 | 91968 |
| 25 | 101121 |