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 | 3 |
| 2 | 10 |
| 3 | 36 |
| 4 | 73 |
| 5 | 177 |
| 6 | 460 |
| 7 | 1083 |
| 8 | 2395 |
| 9 | 5616 |
| 10 | 13645 |
| 11 | 28410 |
| 12 | 61237 |
| 13 | 139332 |
| 14 | 288640 |
| 15 | 617238 |
| 16 | 1349299 |
| 17 | 2868414 |
| 18 | 5996665 |
| 19 | 12814005 |
| 20 | 28009981 |
| 21 | 57356550 |
| 22 | 119204515 |
| 23 | 256361433 |
| 24 | 523470583 |
| 25 | 1084937169 |
| 26 | 2295828010 |
| 27 | 4741694379 |
| 28 | 9785380105 |
| 29 | 20385048345 |
| 30 | 43120114795 |
| 31 | 87517507827 |
| 32 | 180053228620 |
| 33 | 379360852038 |
| 34 | 769412529055 |