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 | 3 |
| 2 | 73 |
| 3 | 173 |
| 4 | 6173 |
| 5 | 66173 |
| 6 | 366173 |
| 7 | 2366173 |
| 8 | 12366173 |
| 9 | 912366173 |
| 10 | 2912366173 |
| 11 | 72912366173 |
| 12 | 372912366173 |
| 13 | 8372912366173 |
| 14 | 18372912366173 |
| 15 | 818372912366173 |
| 16 | 4818372912366173 |