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 | 17 |
| 5 | 136 |
| 6 | 147 |
| 7 | 203 |
| 8 | 590 |
| 9 | 754 |
| 10 | 964 |
| 11 | 970 |
| 12 | 1847 |
| 13 | 2031 |
| 14 | 2727 |
| 15 | 2871 |
| 16 | 5442 |
| 17 | 7035 |
| 18 | 7266 |
| 19 | 11230 |
| 20 | 23307 |
| 21 | 27795 |
| 22 | 34152 |
| 23 | 42614 |
| 24 | 127206 |
| 25 | 133086 |