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 | 14 |
| 3 | 210 |
| 4 | 3276 |
| 5 | 52360 |
| 6 | 850668 |
| 7 | 13983816 |
| 8 | 231917400 |
| 9 | 3872894697 |
| 10 | 65033528560 |
| 11 | 1096993404430 |
| 12 | 18574174153080 |
| 13 | 315502265971620 |
| 14 | 5373846361969456 |
| 15 | 91748617512913200 |
| 16 | 1569699972909739440 |