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 | 1 |
| 2 | 1 |
| 3 | 5 |
| 4 | 5 |
| 5 | 9 |
| 6 | 27 |
| 7 | 31 |
| 8 | 49 |
| 9 | 71 |
| 10 | 185 |
| 11 | 207 |
| 12 | 339 |
| 13 | 457 |
| 14 | 685 |
| 15 | 1421 |
| 16 | 1745 |
| 17 | 2577 |
| 18 | 3615 |
| 19 | 5143 |
| 20 | 6877 |
| 21 | 13439 |
| 22 | 15965 |
| 23 | 23823 |
| 24 | 31983 |
| 25 | 45553 |
| 26 | 59425 |
| 27 | 83549 |
| 28 | 139013 |
| 29 | 173769 |
| 30 | 244803 |
| 31 | 330391 |
| 32 | 452257 |
| 33 | 597935 |
| 34 | 810929 |
| 35 | 1052559 |
| 36 | 1692723 |
| 37 | 2074321 |
| 38 | 2890333 |
| 39 | 3783821 |
| 40 | 5178041 |
| 41 | 6658377 |