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) |
|---|---|
| 0 | 2 |
| 1 | 11 |
| 2 | 23 |
| 3 | 71 |
| 4 | 239 |
| 5 | 719 |
| 6 | 2879 |
| 7 | 5039 |
| 8 | 1439 |
| 9 | 10079 |
| 10 | 37799 |
| 11 | 126719 |
| 12 | 55439 |
| 13 | 110879 |
| 14 | 181439 |
| 15 | 191519 |
| 16 | 166319 |
| 17 | 635039 |
| 18 | 514079 |
| 19 | 665279 |
| 20 | 1330559 |
| 21 | 907199 |
| 22 | 3243239 |
| 23 | 831599 |
| 24 | 2948399 |
| 25 | 6320159 |
| 26 | 4989599 |
| 27 | 15301439 |
| 28 | 14137199 |
| 29 | 5266799 |
| 30 | 11531519 |
| 31 | 8315999 |
| 32 | 23284799 |
| 33 | 17463599 |
| 34 | 45208799 |
| 35 | 52390799 |
| 36 | 34594559 |
| 37 | 111767039 |
| 38 | 95633999 |
| 39 | 117976319 |
| 40 | 70685999 |
| 41 | 68468399 |