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 | 8 |
| 2 | 19 |
| 3 | 41 |
| 4 | 85 |
| 5 | 173 |
| 6 | 349 |
| 7 | 701 |
| 8 | 1405 |
| 9 | 2813 |
| 10 | 5629 |
| 11 | 11261 |
| 12 | 22525 |
| 13 | 45053 |
| 14 | 90109 |
| 15 | 180221 |
| 16 | 360445 |
| 17 | 720893 |
| 18 | 1441789 |
| 19 | 2883581 |
| 20 | 5767165 |
| 21 | 11534333 |
| 22 | 23068669 |
| 23 | 46137341 |
| 24 | 92274685 |
| 25 | 184549373 |
| 26 | 369098749 |
| 27 | 738197501 |
| 28 | 1476395005 |
| 29 | 2952790013 |