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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 3 |
| 3 | 6 |
| 4 | 11 |
| 5 | 21 |
| 6 | 40 |
| 7 | 76 |
| 8 | 145 |
| 9 | 276 |
| 10 | 526 |
| 11 | 1002 |
| 12 | 1909 |
| 13 | 3637 |
| 14 | 6929 |
| 15 | 13201 |
| 16 | 25150 |
| 17 | 47915 |
| 18 | 91286 |
| 19 | 173915 |
| 20 | 331337 |
| 21 | 631252 |
| 22 | 1202640 |
| 23 | 2291229 |
| 24 | 4365172 |
| 25 | 8316378 |
| 26 | 15844082 |
| 27 | 30185609 |
| 28 | 57508601 |
| 29 | 109563441 |
| 30 | 208736561 |
| 31 | 397677834 |
| 32 | 757642355 |
| 33 | 1443434582 |