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 | 3 |
| 3 | 6 |
| 4 | 13 |
| 5 | 27 |
| 6 | 55 |
| 7 | 110 |
| 8 | 220 |
| 9 | 441 |
| 10 | 882 |
| 11 | 1765 |
| 12 | 3531 |
| 13 | 7063 |
| 14 | 14126 |
| 15 | 28253 |
| 16 | 56507 |
| 17 | 113015 |
| 18 | 226031 |
| 19 | 452062 |
| 20 | 904124 |
| 21 | 1808248 |
| 22 | 3616497 |
| 23 | 7232994 |
| 24 | 14465988 |
| 25 | 28931977 |
| 26 | 57863955 |
| 27 | 115727910 |
| 28 | 231455821 |
| 29 | 462911642 |
| 30 | 925823285 |
| 31 | 1851646570 |
| 32 | 3703293141 |
| 33 | 7406586283 |
| 34 | 14813172567 |