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 | 3 |
| 3 | 5 |
| 4 | 17 |
| 5 | 85 |
| 6 | 107 |
| 7 | 219 |
| 8 | 1161 |
| 9 | 1365 |
| 10 | 1619 |
| 11 | 2047 |
| 12 | 4097 |
| 13 | 6141 |
| 14 | 19801 |
| 15 | 25027 |
| 16 | 68961 |
| 17 | 91213 |
| 18 | 134337 |
| 19 | 1540157 |
| 20 | 1804859 |
| 21 | 11877549 |
| 22 | 37696497 |
| 23 | 44092437 |
| 24 | 142710801 |
| 25 | 548269377 |
| 26 | 3387848595 |
| 27 | 4073444175 |
| 28 | 8226780335 |
| 29 | 31029923047 |
| 30 | 64662095631 |
| 31 | 67947722943 |
| 32 | 126590440407 |
| 33 | 2145176968607 |