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 | 7 |
| 4 | 16 |
| 5 | 33 |
| 6 | 70 |
| 7 | 141 |
| 8 | 287 |
| 9 | 578 |
| 10 | 1163 |
| 11 | 2327 |
| 12 | 4674 |
| 13 | 9349 |
| 14 | 18718 |
| 15 | 37452 |
| 16 | 74948 |
| 17 | 149897 |
| 18 | 299890 |
| 19 | 599781 |
| 20 | 1199724 |
| 21 | 2399498 |
| 22 | 4799278 |
| 23 | 9598557 |
| 24 | 19197792 |
| 25 | 38395600 |
| 26 | 76792313 |
| 27 | 153584811 |
| 28 | 307171904 |
| 29 | 614343809 |
| 30 | 1228692446 |
| 31 | 2457384893 |
| 32 | 4914778758 |
| 33 | 9829558241 |
| 34 | 19659134194 |
| 35 | 39318268464 |