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 | 11 |
| 3 | 101 |
| 4 | 151 |
| 5 | 181 |
| 6 | 811 |
| 7 | 881 |
| 8 | 1051 |
| 9 | 1151 |
| 10 | 1181 |
| 11 | 1511 |
| 12 | 1801 |
| 13 | 1811 |
| 14 | 5011 |
| 15 | 5051 |
| 16 | 5081 |
| 17 | 5101 |
| 18 | 5501 |
| 19 | 5581 |
| 20 | 5801 |
| 21 | 5851 |
| 22 | 5881 |
| 23 | 8011 |
| 24 | 8081 |
| 25 | 8101 |
| 26 | 8111 |
| 27 | 8501 |
| 28 | 8581 |
| 29 | 10111 |
| 30 | 10151 |
| 31 | 10181 |
| 32 | 10501 |
| 33 | 11551 |
| 34 | 11801 |
| 35 | 15101 |
| 36 | 15511 |
| 37 | 15551 |
| 38 | 15581 |
| 39 | 15881 |
| 40 | 18181 |
| 41 | 50051 |
| 42 | 50101 |
| 43 | 50111 |