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 | 5 |
| 4 | 103 |
| 5 | 823 |
| 6 | 10061 |
| 7 | 157427 |
| 8 | 2439991 |
| 9 | 49100173 |
| 10 | 1123465789 |
| 11 | 31148488997 |
| 12 | 816695154683 |
| 13 | 25401384476191 |
| 14 | 859466293047623 |
| 15 | 33373273595699879 |
| 16 | 1234907033823334111 |
| 17 | 51892599148660469993 |
| 18 | 2322058300483667372689 |
| 19 | 115713970660820468376569 |
| 20 | 5533344265927977839343539 |