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 | 11 |
| 2 | 41 |
| 3 | 101 |
| 4 | 181 |
| 5 | 401 |
| 6 | 811 |
| 7 | 881 |
| 8 | 1181 |
| 9 | 1481 |
| 10 | 1801 |
| 11 | 1811 |
| 12 | 4001 |
| 13 | 4111 |
| 14 | 4441 |
| 15 | 4481 |
| 16 | 4801 |
| 17 | 8011 |
| 18 | 8081 |
| 19 | 8101 |
| 20 | 8111 |
| 21 | 10111 |
| 22 | 10141 |
| 23 | 10181 |
| 24 | 11411 |
| 25 | 11801 |
| 26 | 14011 |
| 27 | 14081 |
| 28 | 14401 |
| 29 | 14411 |
| 30 | 18041 |
| 31 | 18181 |
| 32 | 18401 |
| 33 | 18481 |
| 34 | 40111 |
| 35 | 40801 |
| 36 | 40841 |
| 37 | 41011 |
| 38 | 41081 |
| 39 | 41141 |
| 40 | 41411 |
| 41 | 41801 |
| 42 | 44041 |