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 | 2 |
| 3 | 1162 |
| 4 | 1692934 |
| 5 | 3851999 |
| 6 | 274422823 |
| 7 | 14543645261 |
| 8 | 492230729674 |
| 9 | 773046873382 |
| 10 | 13010754158393 |
| 11 | 31446154470014 |
| 12 | 583396812890467 |
| 13 | 598371102650063 |