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 | 42 |
| 3 | 132 |
| 4 | 4862 |
| 5 | 35357670 |
| 6 | 1767263190 |
| 7 | 91482563640 |
| 8 | 4861946401452 |
| 9 | 212336130412243110 |
| 10 | 2622127042276492108820 |
| 11 | 10113918591637898134020 |
| 12 | 39044429911904443959240 |
| 13 | 116157871455782434250553845880 |
| 14 | 6852456927844873497549658464312 |
| 15 | 368479169875816659479009042713546950 |