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 | 19 |
| 3 | 5 |
| 4 | 67 |
| 5 | 7 |
| 6 | 281 |
| 7 | 1051 |
| 8 | 6791 |
| 9 | 11 |
| 10 | 115599457 |
| 11 | 365705201 |
| 12 | 79352440891 |
| 13 | 286351937491 |
| 14 | 5810592517241 |
| 15 | 17 |
| 16 | 1942721697854617 |