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 | 2416 |
| 5 | 1 |
| 6 | 1 |
| 7 | 455192 |
| 8 | 455192 |
| 9 | 1 |
| 10 | 1 |
| 11 | 45533450 |
| 12 | 2275172004 |
| 13 | 45533450 |
| 14 | 1 |
| 15 | 1 |
| 16 | 3572085255 |
| 17 | 3207483178157 |
| 18 | 3207483178157 |
| 19 | 3572085255 |
| 20 | 1 |
| 21 | 1 |
| 22 | 251732291184 |
| 23 | 2527925001876036 |
| 24 | 37307713155613000 |
| 25 | 2527925001876036 |
| 26 | 251732291184 |
| 27 | 1 |
| 28 | 1 |
| 29 | 16871482830550 |
| 30 | 1454842842001939656 |