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 | 41 |
| 4 | 61 |
| 5 | 251 |
| 6 | 601 |
| 7 | 641 |
| 8 | 1091 |
| 9 | 1481 |
| 10 | 1601 |
| 11 | 1741 |
| 12 | 1861 |
| 13 | 2371 |
| 14 | 2671 |
| 15 | 3301 |
| 16 | 3911 |
| 17 | 4001 |
| 18 | 5101 |
| 19 | 5381 |
| 20 | 5431 |
| 21 | 5641 |
| 22 | 6311 |
| 23 | 6361 |
| 24 | 9461 |
| 25 | 11821 |
| 26 | 12101 |
| 27 | 12641 |
| 28 | 13451 |
| 29 | 14621 |
| 30 | 14741 |
| 31 | 15791 |
| 32 | 15901 |
| 33 | 17471 |
| 34 | 18211 |
| 35 | 19471 |
| 36 | 20341 |
| 37 | 21481 |
| 38 | 23321 |
| 39 | 24091 |
| 40 | 26171 |
| 41 | 26681 |