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) |
|---|---|
| 2 | 1 |
| 3 | 2 |
| 4 | 10 |
| 5 | 27 |
| 6 | 150 |
| 7 | 641 |
| 8 | 3796 |
| 9 | 21525 |
| 10 | 134863 |
| 11 | 846159 |
| 12 | 5464173 |
| 13 | 35548106 |
| 14 | 234007149 |
| 15 | 1551388944 |
| 16 | 10361158723 |