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 | 3 |
| 2 | 16 |
| 3 | 100 |
| 4 | 680 |
| 5 | 4773 |
| 6 | 34992 |
| 7 | 266823 |
| 8 | 2079512 |
| 9 | 16503238 |
| 10 | 132852644 |
| 11 | 1081509855 |
| 12 | 8885472675 |
| 13 | 73563855306 |
| 14 | 612982476612 |