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 | 1340 |
| 2 | 15704 |
| 3 | 19634 |
| 4 | 31428 |
| 5 | 370310 |
| 6 | 1357264 |
| 7 | 2010800 |
| 8 | 4652428 |
| 9 | 20831422 |
| 10 | 47326799 |
| 11 | 4302407528 |
| 12 | 10726904846 |
| 13 | 25056082298 |
| 14 | 42652618572 |
| 15 | 303371455488 |
| 16 | 304599508788 |
| 17 | 1346294311034 |
| 18 | 2614941710924 |
| 19 | 7177162612042 |