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 | 8 |
| 4 | 15 |
| 5 | 20 |
| 6 | 42 |
| 7 | 60 |
| 8 | 137 |
| 9 | 210 |
| 10 | 520 |
| 11 | 828 |
| 12 | 2124 |
| 13 | 3418 |
| 14 | 8895 |
| 15 | 14370 |
| 16 | 37561 |
| 17 | 60747 |
| 18 | 158959 |
| 19 | 257169 |
| 20 | 673198 |
| 21 | 1089220 |
| 22 | 2851513 |
| 23 | 4613807 |
| 24 | 12078987 |
| 25 | 19544166 |
| 26 | 51167164 |
| 27 | 82790160 |
| 28 | 216747314 |
| 29 | 350704463 |
| 30 | 918156051 |
| 31 | 1485607642 |
| 32 | 3889371138 |
| 33 | 6293134627 |