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) |
|---|---|
| 3 | 5 |
| 4 | 98 |
| 5 | 962 |
| 6 | 7020 |
| 7 | 43573 |
| 8 | 245962 |
| 9 | 1305238 |
| 10 | 6633172 |
| 11 | 32649890 |
| 12 | 156817044 |
| 13 | 738717796 |
| 14 | 3425580376 |
| 15 | 15679951989 |
| 16 | 70992594650 |
| 17 | 318450985230 |
| 18 | 1417072222020 |
| 19 | 6261985407990 |
| 20 | 27502477286460 |
| 21 | 120137081521500 |
| 22 | 522256720264680 |
| 23 | 2260525598620770 |
| 24 | 9746264904755652 |