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 | 10 |
| 2 | 20 |
| 3 | 52 |
| 4 | 232 |
| 5 | 976 |
| 6 | 1332 |
| 7 | 65152 |
| 8 | 261376 |
| 9 | 4191232 |
| 10 | 67096576 |
| 11 | 274877120512 |
| 12 | 4398043365376 |