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) |
|---|---|
| 8 | 26 |
| 9 | 1048 |
| 10 | 21362 |
| 11 | 307660 |
| 12 | 3574869 |
| 13 | 35900857 |
| 14 | 324623778 |
| 15 | 2713846040 |
| 16 | 21359949568 |
| 17 | 160346402882 |
| 18 | 1159100542422 |
| 19 | 8127076433744 |
| 20 | 55581620321035 |
| 21 | 372410647606299 |
| 22 | 2453173612562310 |
| 23 | 15932182184914620 |
| 24 | 102249194946464430 |
| 25 | 649680545407603980 |
| 26 | 4093272335570479850 |