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 | 14 |
| 2 | 196 |
| 3 | 720 |
| 4 | 2760 |
| 5 | 13260 |
| 6 | 50139 |
| 7 | 175903 |
| 8 | 656508 |
| 9 | 2338562 |
| 10 | 7964440 |
| 11 | 27387966 |
| 12 | 93272992 |
| 13 | 311246157 |
| 14 | 1035796645 |
| 15 | 3435764764 |
| 16 | 11296068814 |
| 17 | 36992161254 |
| 18 | 120875903016 |
| 19 | 393346541394 |
| 20 | 1276189913811 |
| 21 | 4133174774211 |
| 22 | 13356263152094 |