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 | 15 |
| 3 | 55 |
| 4 | 69 |
| 5 | 85 |
| 6 | 87 |
| 7 | 157 |
| 8 | 2767 |
| 9 | 3381 |
| 10 | 3877 |
| 11 | 5209 |
| 12 | 10747 |
| 13 | 15769 |
| 14 | 31317 |
| 15 | 40959 |
| 16 | 45805 |
| 17 | 46567 |
| 18 | 51009 |
| 19 | 80163 |