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 | 1 |
| 2 | 5 |
| 3 | 19 |
| 4 | 779 |
| 5 | 84911 |
| 6 | 2632241 |
| 7 | 713337311 |
| 8 | 1163866139 |
| 9 | 587752400195 |
| 10 | 476667196558145 |
| 11 | 2856927907113011 |
| 12 | 345688276760674331 |
| 13 | 13819099649042566549 |
| 14 | 4988694973304366524189 |
| 15 | 10780569837310736058772429 |