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) |
|---|---|
| 0 | 1 |
| 1 | 13 |
| 2 | 168 |
| 3 | 2171 |
| 4 | 28055 |
| 5 | 362544 |
| 6 | 4685017 |
| 7 | 60542677 |
| 8 | 782369784 |
| 9 | 10110264515 |
| 10 | 130651068911 |
| 11 | 1688353631328 |
| 12 | 21817946138353 |
| 13 | 281944946167261 |
| 14 | 3643466354036040 |
| 15 | 47083117656301259 |
| 16 | 608437063177880327 |