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) |
|---|---|
| 10 | 0 |
| 11 | 1 |
| 12 | 1 |
| 13 | 3 |
| 14 | 4 |
| 15 | 4 |
| 16 | 7 |
| 17 | 14 |
| 18 | 21 |
| 19 | 29 |
| 20 | 52 |
| 21 | 89 |
| 22 | 155 |
| 23 | 284 |
| 24 | 528 |
| 25 | 1018 |
| 26 | 2046 |
| 27 | 4282 |
| 28 | 9272 |
| 29 | 21466 |
| 30 | 50967 |