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) |
|---|---|
| 0 | 9 |
| 1 | 10 |
| 2 | 131081 |
| 3 | 129140172 |
| 4 | 17179869193 |
| 5 | 762939453134 |
| 6 | 16926659444745 |
| 7 | 232630513987216 |
| 8 | 2251799813685257 |
| 9 | 16677181699666578 |
| 10 | 100000000000000009 |
| 11 | 505447028499293780 |
| 12 | 2218611106740437001 |
| 13 | 8650415919381337942 |