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 | 2 |
| 2 | 14 |
| 3 | 102 |
| 4 | 836 |
| 5 | 7730 |
| 6 | 79962 |
| 7 | 916454 |
| 8 | 11533832 |
| 9 | 158149026 |
| 10 | 2346622310 |
| 11 | 37458934502 |
| 12 | 640013453004 |
| 13 | 11652216012242 |
| 14 | 225169809833906 |
| 15 | 4602407562991590 |
| 16 | 99194703240441872 |