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 | 3 |
| 2 | 91 |
| 3 | 66 |
| 4 | 340 |
| 5 | 2548 |
| 6 | 30940 |
| 7 | 67228 |
| 8 | 6290620 |
| 9 | 81818748 |
| 10 | 1336727934 |
| 11 | 19729482496 |
| 12 | 358398854656 |
| 13 | 1934923637500 |
| 14 | 115877891562496 |