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 | 4 |
| 2 | 21 |
| 3 | 63 |
| 4 | 117 |
| 5 | 375 |
| 6 | 1325 |
| 7 | 1253 |
| 8 | 5741 |
| 9 | 30455 |
| 10 | 83393 |
| 11 | 68094 |
| 12 | 565882 |
| 13 | 2666148 |
| 14 | 1514639 |