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 | 0 |
| 1 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 6 |
| 5 | 12 |
| 6 | 22 |
| 7 | 41 |
| 8 | 78 |
| 9 | 147 |
| 10 | 276 |
| 11 | 520 |
| 12 | 980 |
| 13 | 1845 |
| 14 | 3474 |
| 15 | 6543 |
| 16 | 12322 |
| 17 | 23204 |
| 18 | 43698 |
| 19 | 82293 |
| 20 | 154974 |
| 21 | 291847 |
| 22 | 549608 |
| 23 | 1035024 |
| 24 | 1949160 |
| 25 | 3670665 |
| 26 | 6912610 |
| 27 | 13017851 |
| 28 | 24515262 |
| 29 | 46167228 |
| 30 | 86942286 |
| 31 | 163730017 |
| 32 | 308336942 |
| 33 | 580661211 |
| 34 | 1093503228 |
| 35 | 2059289112 |