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 | 1 |
| 2 | 7 |
| 3 | 14 |
| 4 | 21 |
| 5 | 66 |
| 6 | 205 |
| 7 | 583 |
| 8 | 837 |
| 9 | 1259 |
| 10 | 1631 |
| 11 | 2178 |
| 12 | 6346 |
| 13 | 15851 |
| 14 | 58371 |
| 15 | 61804 |
| 16 | 129196 |
| 17 | 409879 |
| 18 | 1670753 |