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 | 7 |
| 2 | 17 |
| 3 | 37 |
| 4 | 47 |
| 5 | 67 |
| 6 | 97 |
| 7 | 727 |
| 8 | 757 |
| 9 | 787 |
| 10 | 797 |
| 11 | 1747 |
| 12 | 1787 |
| 13 | 2707 |
| 14 | 2767 |
| 15 | 2797 |
| 16 | 3727 |
| 17 | 3767 |
| 18 | 3797 |
| 19 | 4787 |
| 20 | 5717 |
| 21 | 5737 |
| 22 | 6737 |
| 23 | 8707 |
| 24 | 8737 |
| 25 | 8747 |
| 26 | 9767 |
| 27 | 9787 |
| 28 | 70717 |
| 29 | 71707 |
| 30 | 72707 |
| 31 | 72727 |
| 32 | 72767 |
| 33 | 72797 |
| 34 | 73727 |
| 35 | 73757 |
| 36 | 74707 |
| 37 | 74717 |
| 38 | 74747 |
| 39 | 74797 |
| 40 | 75707 |
| 41 | 75767 |
| 42 | 75787 |
| 43 | 75797 |