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 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 2 |
| 7 | 4 |
| 8 | 5 |
| 9 | 10 |
| 10 | 19 |
| 11 | 36 |
| 12 | 68 |
| 13 | 138 |
| 14 | 277 |
| 15 | 581 |
| 16 | 1218 |
| 17 | 2591 |
| 18 | 5545 |
| 19 | 12026 |
| 20 | 26226 |
| 21 | 57719 |
| 22 | 127685 |
| 23 | 284109 |
| 24 | 634919 |
| 25 | 1425516 |
| 26 | 3212890 |
| 27 | 7269605 |
| 28 | 16504439 |
| 29 | 37592604 |
| 30 | 85876345 |
| 31 | 196717882 |
| 32 | 451768247 |
| 33 | 1039990913 |
| 34 | 2399476030 |
| 35 | 5547849750 |