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 | 1 |
| 3 | 1 |
| 4 | 3 |
| 5 | 3 |
| 6 | 7 |
| 7 | 13 |
| 8 | 22 |
| 9 | 37 |
| 10 | 71 |
| 11 | 128 |
| 12 | 231 |
| 13 | 440 |
| 14 | 807 |
| 15 | 1519 |
| 16 | 2872 |
| 17 | 5371 |
| 18 | 10204 |
| 19 | 19341 |
| 20 | 36759 |
| 21 | 70179 |
| 22 | 134241 |
| 23 | 256856 |
| 24 | 492936 |
| 25 | 947272 |
| 26 | 1822615 |
| 27 | 3513691 |
| 28 | 6781495 |
| 29 | 13103816 |
| 30 | 25348667 |
| 31 | 49092241 |
| 32 | 95168205 |
| 33 | 184661253 |
| 34 | 358636497 |
| 35 | 697094872 |
| 36 | 1356052491 |
| 37 | 2639893495 |
| 38 | 5142817901 |