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 | 2 |
| 2 | 2 |
| 3 | 4 |
| 4 | 4 |
| 5 | 8 |
| 6 | 14 |
| 7 | 28 |
| 8 | 52 |
| 9 | 104 |
| 10 | 206 |
| 11 | 412 |
| 12 | 820 |
| 13 | 1640 |
| 14 | 3278 |
| 15 | 6556 |
| 16 | 13108 |
| 17 | 26216 |
| 18 | 52430 |
| 19 | 104860 |
| 20 | 209716 |
| 21 | 419432 |
| 22 | 838862 |
| 23 | 1677724 |
| 24 | 3355444 |
| 25 | 6710888 |
| 26 | 13421774 |
| 27 | 26843548 |
| 28 | 53687092 |
| 29 | 107374184 |
| 30 | 214748366 |
| 31 | 429496732 |
| 32 | 858993460 |
| 33 | 1717986920 |
| 34 | 3435973838 |