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 | 6 |
| 4 | 14 |
| 5 | 34 |
| 6 | 78 |
| 7 | 178 |
| 8 | 398 |
| 9 | 882 |
| 10 | 1934 |
| 11 | 4210 |
| 12 | 9102 |
| 13 | 19570 |
| 14 | 41870 |
| 15 | 89202 |
| 16 | 189326 |
| 17 | 400498 |
| 18 | 844686 |
| 19 | 1776754 |
| 20 | 3728270 |
| 21 | 7806066 |
| 22 | 16311182 |
| 23 | 34020466 |
| 24 | 70837134 |
| 25 | 147266674 |
| 26 | 305718158 |
| 27 | 633805938 |
| 28 | 1312351118 |
| 29 | 2714180722 |
| 30 | 5607318414 |
| 31 | 11572550770 |
| 32 | 23860929422 |