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 | 1 |
| 2 | 1 |
| 3 | 81 |
| 4 | 85 |
| 5 | 87 |
| 6 | 785 |
| 7 | 1221 |
| 8 | 5669 |
| 9 | 5669 |
| 10 | 193967 |
| 11 | 279002 |
| 12 | 296009 |
| 13 | 893696 |
| 14 | 893696 |
| 15 | 42601399 |
| 16 | 48857271 |
| 17 | 98608238 |
| 18 | 936331413 |