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 | 19 |
| 4 | 29 |
| 5 | 61 |
| 6 | 137 |
| 7 | 883 |
| 8 | 1381 |
| 9 | 1823 |
| 10 | 5227 |
| 11 | 25561 |
| 12 | 29537 |
| 13 | 300893 |