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 | 0 |
| 2 | 3 |
| 3 | 17 |
| 4 | 27 |
| 5 | 54 |
| 6 | 1727 |
| 7 | 1875 |
| 8 | 1883 |
| 9 | 6840 |
| 10 | 10781 |
| 11 | 25365 |
| 12 | 98445 |
| 13 | 137249 |