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) |
|---|---|
| 2 | 4 |
| 3 | 11 |
| 4 | 29 |
| 5 | 173 |
| 6 | 1063 |
| 7 | 7074 |
| 8 | 47753 |
| 9 | 325961 |
| 10 | 2228269 |
| 11 | 15262701 |
| 12 | 104577551 |
| 13 | 716721983 |
| 14 | 4912208209 |