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 | 8 |
| 3 | 45 |
| 4 | 620 |
| 5 | 37179 |
| 6 | 2640993 |
| 7 | 482228052 |
| 8 | 246430289779 |
| 9 | 233010334725043 |
| 10 | 513658708035556281 |