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 | 6 |
| 4 | 18 |
| 5 | 42 |
| 6 | 54 |
| 7 | 126 |
| 8 | 162 |
| 9 | 294 |
| 10 | 342 |
| 11 | 378 |
| 12 | 486 |
| 13 | 882 |
| 14 | 1026 |
| 15 | 1134 |
| 16 | 1314 |
| 17 | 1458 |
| 18 | 1806 |
| 19 | 2058 |
| 20 | 2394 |
| 21 | 2646 |
| 22 | 3078 |
| 23 | 3402 |
| 24 | 3942 |
| 25 | 4374 |
| 26 | 5334 |
| 27 | 5418 |
| 28 | 6174 |
| 29 | 6498 |
| 30 | 7182 |
| 31 | 7938 |
| 32 | 9198 |
| 33 | 9234 |
| 34 | 10206 |
| 35 | 11826 |
| 36 | 12642 |
| 37 | 13122 |
| 38 | 14154 |
| 39 | 14406 |
| 40 | 16002 |
| 41 | 16254 |