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 | 10 |
| 2 | 22 |
| 3 | 43 |
| 4 | 82 |
| 5 | 157 |
| 6 | 304 |
| 7 | 586 |
| 8 | 1129 |
| 9 | 2176 |
| 10 | 4195 |
| 11 | 8086 |
| 12 | 15586 |
| 13 | 30043 |
| 14 | 57910 |
| 15 | 111625 |
| 16 | 215164 |
| 17 | 414742 |
| 18 | 799441 |
| 19 | 1540972 |
| 20 | 2970319 |
| 21 | 5725474 |
| 22 | 11036206 |
| 23 | 21272971 |
| 24 | 41004970 |
| 25 | 79039621 |
| 26 | 152353768 |
| 27 | 293671330 |
| 28 | 566069689 |
| 29 | 1091134408 |
| 30 | 2103229195 |
| 31 | 4054104622 |