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 | 12 |
| 5 | 21 |
| 6 | 41 |
| 7 | 74 |
| 8 | 144 |
| 9 | 275 |
| 10 | 541 |
| 11 | 1054 |
| 12 | 2102 |
| 13 | 4151 |
| 14 | 8281 |
| 15 | 16484 |
| 16 | 32938 |
| 17 | 65707 |
| 18 | 131391 |
| 19 | 262464 |
| 20 | 524878 |
| 21 | 1049201 |
| 22 | 2098291 |
| 23 | 4195444 |
| 24 | 8390860 |
| 25 | 16779477 |
| 26 | 33558743 |
| 27 | 67113306 |
| 28 | 134226304 |
| 29 | 268444033 |
| 30 | 536887965 |
| 31 | 1073758878 |
| 32 | 2147517156 |
| 33 | 4295001319 |
| 34 | 8590001385 |
| 35 | 17179936018 |