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 | 23 |
| 2 | 67 |
| 3 | 733 |
| 4 | 1009 |
| 5 | 4603 |
| 6 | 16519 |
| 7 | 66301 |
| 8 | 154459 |
| 9 | 161221 |
| 10 | 173713 |
| 11 | 327079 |
| 12 | 750679 |
| 13 | 1694809 |
| 14 | 1940683 |
| 15 | 2023741 |
| 16 | 2042281 |
| 17 | 3012169 |
| 18 | 3852973 |
| 19 | 4011523 |
| 20 | 4704199 |
| 21 | 5407561 |
| 22 | 5536213 |
| 23 | 7292251 |
| 24 | 7347229 |
| 25 | 8484901 |
| 26 | 11359939 |
| 27 | 11633971 |
| 28 | 12559189 |