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 | 4 |
| 4 | 5 |
| 5 | 8 |
| 6 | 12 |
| 7 | 55 |
| 8 | 125 |
| 9 | 136 |
| 10 | 221 |
| 11 | 224 |
| 12 | 668 |
| 13 | 1254 |
| 14 | 2639 |
| 15 | 4745 |
| 16 | 5888 |
| 17 | 8526 |
| 18 | 9139 |
| 19 | 13771 |
| 20 | 17936 |
| 21 | 27713 |
| 22 | 38668 |
| 23 | 44680 |
| 24 | 73891 |
| 25 | 135184 |
| 26 | 200610 |
| 27 | 215592 |
| 28 | 247793 |
| 29 | 258710 |
| 30 | 291721 |