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 | 7 |
| 3 | 11 |
| 4 | 13 |
| 5 | 19 |
| 6 | 77 |
| 7 | 91 |
| 8 | 133 |
| 9 | 143 |
| 10 | 209 |
| 11 | 247 |
| 12 | 1001 |
| 13 | 1463 |
| 14 | 1729 |
| 15 | 2717 |
| 16 | 19019 |
| 17 | 52579 |
| 18 | 368053 |
| 19 | 578369 |
| 20 | 683527 |
| 21 | 999001 |
| 22 | 4048583 |
| 23 | 4784689 |
| 24 | 6993007 |
| 25 | 7518797 |
| 26 | 10989011 |
| 27 | 12987013 |
| 28 | 52631579 |
| 29 | 76923077 |
| 30 | 90909091 |
| 31 | 142857143 |
| 32 | 1000000001 |