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 | 7 |
| 4 | 13 |
| 5 | 26 |
| 6 | 51 |
| 7 | 98 |
| 8 | 190 |
| 9 | 367 |
| 10 | 708 |
| 11 | 1364 |
| 12 | 2630 |
| 13 | 5071 |
| 14 | 9775 |
| 15 | 18841 |
| 16 | 36318 |
| 17 | 70007 |
| 18 | 134942 |
| 19 | 260110 |
| 20 | 501380 |
| 21 | 966441 |
| 22 | 1862874 |
| 23 | 3590806 |
| 24 | 6921503 |
| 25 | 13341626 |
| 26 | 25716810 |
| 27 | 49570746 |
| 28 | 95550687 |
| 29 | 184179871 |
| 30 | 355018115 |
| 31 | 684319420 |
| 32 | 1319068095 |
| 33 | 2542585503 |