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 | 2 |
| 2 | 7 |
| 3 | 31 |
| 4 | 1637 |
| 5 | 1831 |
| 6 | 74653 |
| 7 | 322171 |
| 8 | 5051309 |
| 9 | 11938793 |
| 10 | 245333213 |
| 11 | 245333159 |
| 12 | 130272314561 |
| 13 | 1273135176799 |
| 14 | 23840790158827 |