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 | 5 |
| 2 | 7 |
| 3 | 59 |
| 4 | 79 |
| 5 | 97 |
| 6 | 557 |
| 7 | 577 |
| 8 | 599 |
| 9 | 757 |
| 10 | 797 |
| 11 | 977 |
| 12 | 997 |
| 13 | 5557 |
| 14 | 5779 |
| 15 | 7559 |
| 16 | 7577 |
| 17 | 7757 |
| 18 | 7759 |
| 19 | 55579 |
| 20 | 55799 |
| 21 | 55997 |
| 22 | 57557 |
| 23 | 57559 |
| 24 | 57977 |
| 25 | 59557 |
| 26 | 59779 |
| 27 | 59797 |
| 28 | 59957 |
| 29 | 59999 |
| 30 | 75557 |
| 31 | 75577 |
| 32 | 75797 |
| 33 | 75979 |
| 34 | 75997 |
| 35 | 77557 |
| 36 | 77797 |
| 37 | 77977 |
| 38 | 77999 |
| 39 | 79559 |
| 40 | 79579 |
| 41 | 79757 |
| 42 | 79777 |