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 | 1 |
| 2 | 3 |
| 3 | 4 |
| 4 | 11 |
| 5 | 21 |
| 6 | 42 |
| 7 | 71 |
| 8 | 131 |
| 9 | 238 |
| 10 | 443 |
| 11 | 815 |
| 12 | 1502 |
| 13 | 2757 |
| 14 | 5071 |
| 15 | 9324 |
| 16 | 17155 |
| 17 | 31553 |
| 18 | 58038 |
| 19 | 106743 |
| 20 | 196331 |
| 21 | 361106 |
| 22 | 664183 |
| 23 | 1221623 |
| 24 | 2246918 |
| 25 | 4132721 |
| 26 | 7601259 |
| 27 | 13980892 |
| 28 | 25714875 |
| 29 | 47297029 |
| 30 | 86992802 |
| 31 | 160004703 |
| 32 | 294294531 |
| 33 | 541292030 |
| 34 | 995591267 |
| 35 | 1831177831 |