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 | 1 |
| 2 | 25 |
| 3 | 501 |
| 4 | 10341 |
| 5 | 152061 |
| 6 | 2375761 |
| 7 | 35145661 |
| 8 | 516277661 |
| 9 | 7267464261 |
| 10 | 121672446261 |
| 11 | 20125401442261 |
| 12 | 3342313131342261 |
| 13 | 564731226736442261 |
| 14 | 116343242472501442261 |
| 15 | 20325073566675147442261 |
| 16 | 3327107422474572347442261 |