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 | 4 |
| 3 | 14 |
| 4 | 29 |
| 5 | 82 |
| 6 | 67117 |
| 7 | 86249 |
| 8 | 140064 |
| 9 | 185699 |
| 10 | 392081 |
| 11 | 2915083 |
| 12 | 6315155 |
| 13 | 9723681 |
| 14 | 17754993 |
| 15 | 820165642 |
| 16 | 9388829301 |
| 17 | 143904506919 |
| 18 | 192738887697 |