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 | 4 |
| 5 | 6 |
| 6 | 11 |
| 7 | 58 |
| 8 | 77 |
| 9 | 143 |
| 10 | 209 |
| 11 | 1009 |
| 12 | 1280 |
| 13 | 6555 |
| 14 | 7564 |
| 15 | 12793 |
| 16 | 52162 |
| 17 | 59147 |
| 18 | 75801 |
| 19 | 85460 |
| 20 | 127710 |
| 21 | 205439 |
| 22 | 589003 |
| 23 | 856075 |