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 | 4 |
| 3 | 11 |
| 4 | 29 |
| 5 | 68 |
| 6 | 160 |
| 7 | 364 |
| 8 | 820 |
| 9 | 1813 |
| 10 | 3981 |
| 11 | 8674 |
| 12 | 18782 |
| 13 | 40387 |
| 14 | 86443 |
| 15 | 184232 |
| 16 | 391188 |
| 17 | 827787 |
| 18 | 1746443 |
| 19 | 3674573 |
| 20 | 7712561 |
| 21 | 16151933 |
| 22 | 33757505 |
| 23 | 70422235 |
| 24 | 146659055 |
| 25 | 304947023 |
| 26 | 633152157 |
| 27 | 1312820598 |
| 28 | 2718674046 |
| 29 | 5623413203 |
| 30 | 11618957217 |
| 31 | 23982175093 |
| 32 | 49452872529 |