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 | 50 |
| 2 | 2500 |
| 3 | 110116 |
| 4 | 4816168 |
| 5 | 210163664 |
| 6 | 9169032476 |
| 7 | 400006582368 |
| 8 | 17450517286804 |
| 9 | 761287955888788 |
| 10 | 33211580867804324 |
| 11 | 1448872354425344280 |
| 12 | 63207803924281966208 |
| 13 | 2757473052802943936172 |
| 14 | 120296184397162010680224 |