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 | 5 |
| 2 | 7 |
| 3 | 13 |
| 4 | 31 |
| 5 | 733 |
| 6 | 19687 |
| 7 | 59053 |
| 8 | 31381059613 |
| 9 | 205891132094653 |
| 10 | 109418989131512359213 |
| 11 | 1570042899082081611640534567 |
| 12 | 323257909929174534292273980721360271853391 |