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 | 1 |
| 2 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 9 |
| 6 | 14 |
| 7 | 25 |
| 8 | 41 |
| 9 | 76 |
| 10 | 128 |
| 11 | 229 |
| 12 | 389 |
| 13 | 710 |
| 14 | 1238 |
| 15 | 2258 |
| 16 | 3986 |
| 17 | 7211 |
| 18 | 13000 |
| 19 | 23609 |
| 20 | 42839 |
| 21 | 78271 |
| 22 | 142924 |
| 23 | 262541 |
| 24 | 481347 |
| 25 | 887753 |
| 26 | 1637365 |
| 27 | 3027681 |
| 28 | 5604228 |
| 29 | 10397802 |