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 | 2 |
| 3 | 5 |
| 4 | 13 |
| 5 | 31 |
| 6 | 76 |
| 7 | 178 |
| 8 | 423 |
| 9 | 988 |
| 10 | 2312 |
| 11 | 5361 |
| 12 | 12427 |
| 13 | 28626 |
| 14 | 65813 |
| 15 | 150700 |
| 16 | 344232 |
| 17 | 783832 |
| 18 | 1780650 |
| 19 | 4034591 |
| 20 | 9121571 |
| 21 | 20576349 |
| 22 | 46322816 |
| 23 | 104079338 |
| 24 | 233421517 |
| 25 | 522574991 |
| 26 | 1167974002 |
| 27 | 2606282841 |
| 28 | 5806953923 |
| 29 | 12919314397 |
| 30 | 28702716868 |
| 31 | 63682839588 |
| 32 | 141111193270 |