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 | 69 |
| 3 | 28565 |
| 4 | 720785 |
| 5 | 18733087 |
| 6 | 1504842706 |
| 7 | 108229776807 |
| 8 | 5471123716394 |
| 9 | 286817881089193 |
| 10 | 17003133505644511 |
| 11 | 992034690844277806 |
| 12 | 55560988268455263857 |
| 13 | 3131312608795918940918 |
| 14 | 178941939002152696425045 |