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 | 3 |
| 3 | 15 |
| 4 | 35 |
| 5 | 119 |
| 6 | 255 |
| 7 | 455 |
| 8 | 1295 |
| 9 | 2555 |
| 10 | 2703 |
| 11 | 3815 |
| 12 | 3855 |
| 13 | 4355 |
| 14 | 5543 |
| 15 | 6479 |
| 16 | 8007 |
| 17 | 9215 |
| 18 | 10439 |
| 19 | 10619 |
| 20 | 11951 |
| 21 | 16211 |
| 22 | 22895 |
| 23 | 23435 |
| 24 | 26319 |
| 25 | 26795 |
| 26 | 27839 |
| 27 | 28679 |
| 28 | 35207 |
| 29 | 43055 |
| 30 | 44099 |
| 31 | 47519 |
| 32 | 47879 |
| 33 | 49679 |
| 34 | 51119 |
| 35 | 57239 |
| 36 | 61919 |
| 37 | 62567 |
| 38 | 63167 |
| 39 | 63935 |
| 40 | 65535 |
| 41 | 74447 |
| 42 | 79055 |