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 | 2 |
| 3 | 26 |
| 4 | 53 |
| 5 | 365 |
| 6 | 73 |
| 7 | 13369 |
| 8 | 31226 |
| 9 | 40193 |
| 10 | 1346393 |
| 11 | 10982633 |
| 12 | 59784881 |
| 13 | 12459674 |
| 14 | 197301737 |
| 15 | 4044371993 |
| 16 | 16335212753 |
| 17 | 165277755905 |
| 18 | 33055551181 |
| 19 | 627510050434 |
| 20 | 2556360882389 |
| 21 | 25830314642530 |
| 22 | 5166062928506 |
| 23 | 433477841994649 |
| 24 | 1561599571802482 |