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 | 1 |
| 4 | 1 |
| 5 | 241 |
| 6 | 241 |
| 7 | 12853 |
| 8 | 12853 |
| 9 | 234613 |
| 10 | 376741 |
| 11 | 78312721 |
| 12 | 125938261 |
| 13 | 4019167441 |
| 14 | 16586155153 |
| 15 | 35237422882 |
| 16 | 1296230533473 |
| 17 | 42301168491121 |
| 18 | 61118966262061 |