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 | 1 |
| 1 | 3 |
| 2 | 11 |
| 3 | 31 |
| 4 | 84 |
| 5 | 198 |
| 6 | 440 |
| 7 | 904 |
| 8 | 1766 |
| 9 | 3266 |
| 10 | 5802 |
| 11 | 9906 |
| 12 | 16384 |
| 13 | 26284 |
| 14 | 41104 |
| 15 | 62752 |
| 16 | 93831 |
| 17 | 137589 |
| 18 | 198309 |
| 19 | 281249 |
| 20 | 393148 |
| 21 | 542154 |
| 22 | 738480 |
| 23 | 994320 |
| 24 | 1324668 |
| 25 | 1747220 |
| 26 | 2283396 |
| 27 | 2958228 |
| 28 | 3801600 |
| 29 | 4848120 |
| 30 | 6138624 |
| 31 | 7720032 |
| 32 | 9647133 |
| 33 | 11982423 |
| 34 | 14798223 |
| 35 | 18176499 |