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 | 4 |
| 4 | 6 |
| 5 | 18 |
| 6 | 42 |
| 7 | 44 |
| 8 | 49 |
| 9 | 246 |
| 10 | 257 |
| 11 | 259 |
| 12 | 272 |
| 13 | 283 |
| 14 | 294 |
| 15 | 25284 |
| 16 | 62648 |
| 17 | 62664 |
| 18 | 62673 |
| 19 | 62700 |
| 20 | 62701 |
| 21 | 158706 |
| 22 | 404835 |
| 23 | 404859 |
| 24 | 405119 |
| 25 | 405448 |
| 26 | 405451 |
| 27 | 2630908 |
| 28 | 2630929 |
| 29 | 2631249 |
| 30 | 2631303 |
| 31 | 2631368 |
| 32 | 2631414 |
| 33 | 2631509 |
| 34 | 2631517 |
| 35 | 2631576 |
| 36 | 2631666 |
| 37 | 17405852 |
| 38 | 44932936 |