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 | 4 |
| 3 | 8 |
| 4 | 16 |
| 5 | 32 |
| 6 | 64 |
| 7 | 128 |
| 8 | 256 |
| 9 | 512 |
| 10 | 1024 |
| 11 | 2048 |
| 12 | 4095 |
| 13 | 8178 |
| 14 | 16278 |
| 15 | 32192 |
| 16 | 63019 |
| 17 | 121670 |
| 18 | 230964 |
| 19 | 430104 |
| 20 | 784626 |
| 21 | 1401292 |
| 22 | 2449868 |
| 23 | 4194304 |
| 24 | 7036530 |
| 25 | 11576916 |
| 26 | 18696432 |
| 27 | 29666704 |
| 28 | 46295513 |
| 29 | 71116846 |
| 30 | 107636402 |
| 31 | 160645504 |
| 32 | 236618693 |
| 33 | 344212906 |
| 34 | 494889092 |