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 | 2 |
| 3 | 6 |
| 4 | 16 |
| 5 | 54 |
| 6 | 232 |
| 7 | 936 |
| 8 | 4136 |
| 9 | 19112 |
| 10 | 98666 |
| 11 | 559598 |
| 12 | 3448160 |
| 13 | 22951024 |
| 14 | 164020894 |
| 15 | 1255124388 |
| 16 | 10182613618 |
| 17 | 87879918338 |