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) |
|---|---|
| 2 | 3 |
| 3 | 439 |
| 4 | 4812191 |
| 5 | 41051 |
| 6 | 1753 |
| 7 | 75869 |
| 8 | 24359 |
| 9 | 1674289 |
| 10 | 17509 |
| 11 | 6221 |
| 12 | 771653 |
| 13 | 29863 |
| 14 | 6899 |
| 15 | 35353 |
| 16 | 1073239 |
| 17 | 4001 |
| 18 | 18959 |
| 19 | 1613741 |
| 20 | 1033 |
| 21 | 12077759 |
| 22 | 172433 |
| 23 | 1548149 |
| 24 | 364079 |
| 25 | 199 |
| 26 | 4580399 |
| 27 | 373 |
| 28 | 3847 |
| 29 | 411396253 |
| 30 | 41863 |
| 31 | 1371031 |
| 32 | 11491 |
| 33 | 135911 |
| 34 | 45707 |
| 35 | 308149 |
| 36 | 364909 |
| 37 | 176537 |
| 38 | 2089 |
| 39 | 32569961 |
| 40 | 13619 |
| 41 | 625861 |