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 | 1 |
| 4 | 2 |
| 5 | 3 |
| 6 | 6 |
| 7 | 11 |
| 8 | 22 |
| 9 | 43 |
| 10 | 90 |
| 11 | 185 |
| 12 | 393 |
| 13 | 835 |
| 14 | 1802 |
| 15 | 3904 |
| 16 | 8540 |
| 17 | 18756 |
| 18 | 41463 |
| 19 | 92022 |
| 20 | 205179 |
| 21 | 459086 |
| 22 | 1030917 |
| 23 | 2321949 |
| 24 | 5245104 |
| 25 | 11878750 |
| 26 | 26967957 |
| 27 | 61359917 |
| 28 | 139902251 |
| 29 | 319591669 |
| 30 | 731385621 |
| 31 | 1676573854 |
| 32 | 3849288924 |
| 33 | 8850674950 |
| 34 | 20378544752 |
| 35 | 46982414535 |