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 | 4 |
| 2 | 14 |
| 3 | 74 |
| 4 | 77 |
| 5 | 111 |
| 6 | 141 |
| 7 | 177 |
| 8 | 411 |
| 9 | 417 |
| 10 | 447 |
| 11 | 471 |
| 12 | 717 |
| 13 | 771 |
| 14 | 1111 |
| 15 | 1114 |
| 16 | 1141 |
| 17 | 1147 |
| 18 | 1174 |
| 19 | 1177 |
| 20 | 1411 |
| 21 | 1417 |
| 22 | 1441 |
| 23 | 1477 |
| 24 | 1711 |
| 25 | 1714 |
| 26 | 1717 |
| 27 | 1774 |
| 28 | 4117 |
| 29 | 4141 |
| 30 | 4171 |
| 31 | 4174 |
| 32 | 4411 |
| 33 | 4414 |
| 34 | 4417 |
| 35 | 4471 |
| 36 | 4474 |
| 37 | 4711 |
| 38 | 4714 |
| 39 | 4717 |
| 40 | 4741 |
| 41 | 4747 |
| 42 | 4771 |
| 43 | 4777 |
| 44 | 7111 |
| 45 | 7114 |
| 46 | 7117 |
| 47 | 7141 |