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 | 0 |
| 2 | 1 |
| 3 | 10 |
| 4 | 161 |
| 5 | 4026 |
| 6 | 144937 |
| 7 | 7101914 |
| 8 | 454522497 |
| 9 | 36816322258 |
| 10 | 3681632225801 |
| 11 | 445477499321922 |
| 12 | 64148759902356769 |
| 13 | 10841140423498293962 |
| 14 | 2124863523005665616553 |
| 15 | 478094292676274763724426 |