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) |
|---|---|
| 0 | 0 |
| 1 | 1 |
| 2 | 5 |
| 3 | 53 |
| 4 | 76 |
| 5 | 245 |
| 6 | 1647 |
| 7 | 5257 |
| 8 | 20336 |
| 9 | 30940 |
| 10 | 124837 |
| 11 | 374756 |
| 12 | 1205149 |
| 13 | 2643792 |
| 14 | 7516934 |
| 15 | 29855796 |
| 16 | 102243621 |