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 | 1124864 |
| 2 | 21952000 |
| 3 | 82312875 |
| 4 | 322828856 |
| 5 | 916132832 |
| 6 | 36859543552 |
| 7 | 69731032896 |
| 8 | 242620354053 |
| 9 | 719323136000 |
| 10 | 2697228288000 |
| 11 | 6864416425125 |
| 12 | 8712567840033 |
| 13 | 10516413792429 |
| 14 | 10578455953408 |
| 15 | 16140568923648 |
| 16 | 30019840638976 |
| 17 | 35790185383875 |
| 18 | 67052070434376 |
| 19 | 72762401500992 |