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 | 99 |
| 2 | 17499 |
| 3 | 16537086 |
| 4 | 83545858925 |
| 5 | 2256314178023600 |
| 6 | 325754552781442854792 |
| 7 | 251417716503635583550380605 |