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 | 13 |
| 2 | 733 |
| 3 | 31687 |
| 4 | 1453535 |
| 5 | 65805403 |
| 6 | 2989126727 |
| 7 | 135658637925 |
| 8 | 6158217253688 |
| 9 | 279533139565077 |
| 10 | 12688781322524383 |
| 11 | 575975678462394151 |
| 12 | 26145024935911561519 |
| 13 | 1186789728933332428003 |
| 14 | 53871436268769248658909 |