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 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 91147 |
| 8 | 4557301 |
| 9 | 143008075 |
| 10 | 3791855893 |
| 11 | 95039848267 |
| 12 | 2350059062869 |
| 13 | 58037421216523 |
| 14 | 1434206075225749 |
| 15 | 35454497256469963 |
| 16 | 876533685507121621 |
| 17 | 21670381641194181259 |
| 18 | 535748905642908896533 |
| 19 | 13245082208240954261323 |