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) |
|---|---|
| 9 | 1 |
| 10 | 4 |
| 11 | 16 |
| 12 | 60 |
| 13 | 202 |
| 14 | 626 |
| 15 | 1787 |
| 16 | 4755 |
| 17 | 11848 |
| 18 | 27881 |
| 19 | 62265 |
| 20 | 132769 |
| 21 | 271431 |
| 22 | 534358 |
| 23 | 1016390 |
| 24 | 1873983 |
| 25 | 3358043 |
| 26 | 5862811 |
| 27 | 9993697 |
| 28 | 16664380 |
| 29 | 27227873 |
| 30 | 43658180 |
| 31 | 68789775 |
| 32 | 106640700 |
| 33 | 162829982 |
| 34 | 245127960 |
| 35 | 364155076 |
| 36 | 534285064 |
| 37 | 774774427 |