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) |
|---|---|
| 6 | 79 |
| 7 | 559 |
| 8 | 4479 |
| 9 | 40319 |
| 10 | 403199 |
| 11 | 4435199 |
| 12 | 53222399 |
| 13 | 691891199 |
| 14 | 9686476799 |
| 15 | 145297151999 |
| 16 | 2324754431999 |
| 17 | 39520825343999 |
| 18 | 711374856191999 |
| 19 | 13516122267647999 |
| 20 | 270322445352959999 |
| 21 | 5676771352412159999 |
| 22 | 124888969753067519999 |