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 | 2 |
| 3 | 3 |
| 4 | 4 |
| 5 | 6 |
| 6 | 21 |
| 7 | 24 |
| 8 | 27 |
| 9 | 30 |
| 10 | 54 |
| 11 | 70 |
| 12 | 126 |
| 13 | 369 |
| 14 | 435 |
| 15 | 612 |
| 16 | 787 |
| 17 | 1275 |
| 18 | 2155 |
| 19 | 2436 |
| 20 | 5734 |
| 21 | 6016 |
| 22 | 16107 |
| 23 | 25786 |
| 24 | 34266 |
| 25 | 38841 |
| 26 | 45834 |
| 27 | 46584 |