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 | 12 |
| 5 | 25 |
| 6 | 54 |
| 7 | 120 |
| 8 | 265 |
| 9 | 580 |
| 10 | 1272 |
| 11 | 2796 |
| 12 | 6143 |
| 13 | 13488 |
| 14 | 29619 |
| 15 | 65053 |
| 16 | 142873 |
| 17 | 313771 |
| 18 | 689095 |
| 19 | 1513390 |
| 20 | 3323699 |
| 21 | 7299465 |
| 22 | 16031000 |
| 23 | 35207128 |
| 24 | 77321545 |
| 25 | 169812767 |
| 26 | 372941033 |
| 27 | 819049274 |
| 28 | 1798787604 |
| 29 | 3950478790 |
| 30 | 8676000808 |
| 31 | 19054143661 |
| 32 | 41846514135 |