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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 4 |
| 3 | 7 |
| 4 | 13 |
| 5 | 23 |
| 6 | 46 |
| 7 | 88 |
| 8 | 186 |
| 9 | 395 |
| 10 | 880 |
| 11 | 1989 |
| 12 | 4644 |
| 13 | 10934 |
| 14 | 26210 |
| 15 | 63319 |
| 16 | 154377 |
| 17 | 378443 |
| 18 | 933022 |
| 19 | 2308956 |
| 20 | 5735371 |
| 21 | 14286907 |
| 22 | 35683814 |
| 23 | 89324137 |
| 24 | 224057918 |
| 25 | 563033978 |
| 26 | 1417210456 |
| 27 | 3572641303 |
| 28 | 9018885121 |
| 29 | 22796905055 |
| 30 | 57692673962 |
| 31 | 146167385344 |
| 32 | 370710166434 |