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 | 4 |
| 2 | 22 |
| 3 | 136 |
| 4 | 903 |
| 5 | 6361 |
| 6 | 46545 |
| 7 | 354123 |
| 8 | 2761106 |
| 9 | 21925170 |
| 10 | 176544507 |
| 11 | 1437663500 |
| 12 | 11814853749 |
| 13 | 97837428598 |
| 14 | 815398741896 |