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 | 127 |
| 3 | 2059 |
| 4 | 2186 |
| 5 | 14197 |
| 6 | 16256 |
| 7 | 16383 |
| 8 | 61741 |
| 9 | 75938 |
| 10 | 77997 |
| 11 | 78124 |
| 12 | 201811 |
| 13 | 263552 |
| 14 | 277749 |
| 15 | 279808 |
| 16 | 279935 |
| 17 | 543607 |
| 18 | 745418 |
| 19 | 807159 |
| 20 | 821356 |
| 21 | 823415 |
| 22 | 823542 |
| 23 | 1273609 |
| 24 | 1817216 |
| 25 | 2019027 |
| 26 | 2080768 |
| 27 | 2094965 |
| 28 | 2097024 |
| 29 | 2097151 |
| 30 | 2685817 |