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 | 5 |
| 3 | 13 |
| 4 | 39 |
| 5 | 81 |
| 6 | 225 |
| 7 | 449 |
| 8 | 1115 |
| 9 | 2345 |
| 10 | 5373 |
| 11 | 11265 |
| 12 | 25483 |
| 13 | 53249 |
| 14 | 116497 |
| 15 | 246405 |
| 16 | 529195 |
| 17 | 1114113 |
| 18 | 2372741 |
| 19 | 4980737 |
| 20 | 10515511 |
| 21 | 22025617 |
| 22 | 46204953 |
| 23 | 96468993 |
| 24 | 201506607 |
| 25 | 419432417 |
| 26 | 872787997 |
| 27 | 1811981789 |
| 28 | 3758970975 |
| 29 | 7784628225 |
| 30 | 16108217801 |
| 31 | 33285996545 |
| 32 | 68723976779 |