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 | 5 |
| 4 | 9 |
| 5 | 23 |
| 6 | 39 |
| 7 | 79 |
| 8 | 158 |
| 9 | 281 |
| 10 | 741 |
| 11 | 1145 |
| 12 | 2297 |
| 13 | 4495 |
| 14 | 10111 |
| 15 | 20223 |
| 16 | 40446 |
| 17 | 80983 |
| 18 | 162009 |
| 19 | 323369 |
| 20 | 646271 |
| 21 | 1216723 |
| 22 | 2592211 |
| 23 | 5184422 |
| 24 | 9733109 |
| 25 | 20739329 |
| 26 | 41467565 |
| 27 | 81559503 |
| 28 | 163649289 |
| 29 | 311481083 |
| 30 | 662667007 |
| 31 | 1325334527 |
| 32 | 2628708543 |
| 33 | 5308871023 |
| 34 | 9627863373 |