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 | 8 |
| 1 | 13 |
| 2 | 28 |
| 3 | 68 |
| 4 | 173 |
| 5 | 448 |
| 6 | 1168 |
| 7 | 3053 |
| 8 | 7988 |
| 9 | 20908 |
| 10 | 54733 |
| 11 | 143288 |
| 12 | 375128 |
| 13 | 982093 |
| 14 | 2571148 |
| 15 | 6731348 |
| 16 | 17622893 |
| 17 | 46137328 |
| 18 | 120789088 |
| 19 | 316229933 |
| 20 | 827900708 |
| 21 | 2167472188 |
| 22 | 5674515853 |
| 23 | 14856075368 |
| 24 | 38893710248 |
| 25 | 101825055373 |
| 26 | 266581455868 |
| 27 | 697919312228 |
| 28 | 1827176480813 |
| 29 | 4783610130208 |
| 30 | 12523653909808 |