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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 18 |
| 5 | 1 |
| 6 | 1 |
| 7 | 307 |
| 8 | 307 |
| 9 | 1 |
| 10 | 1 |
| 11 | 5220 |
| 12 | 89030 |
| 13 | 5220 |
| 14 | 1 |
| 15 | 1 |
| 16 | 88741 |
| 17 | 25734890 |
| 18 | 25734890 |
| 19 | 88741 |
| 20 | 1 |
| 21 | 1 |
| 22 | 1508598 |
| 23 | 7437471951 |
| 24 | 126461249460 |
| 25 | 7437471951 |
| 26 | 1508598 |
| 27 | 1 |
| 28 | 1 |
| 29 | 25646167 |
| 30 | 2149430902437 |
| 31 | 621311556068931 |
| 32 | 621311556068931 |