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 | 4 |
| 4 | 13 |
| 5 | 14 |
| 6 | 41 |
| 7 | 46 |
| 8 | 446 |
| 9 | 1066 |
| 10 | 16054 |
| 11 | 251713 |
| 12 | 251738 |
| 13 | 251764 |
| 14 | 251789 |
| 15 | 27067052 |
| 16 | 27067124 |
| 17 | 465769808 |
| 18 | 465769816 |
| 19 | 1208198606 |
| 20 | 1208198632 |
| 21 | 145935689368 |