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 | 511 |
| 10 | 1020 |
| 11 | 2036 |
| 12 | 4064 |
| 13 | 8112 |
| 14 | 16192 |
| 15 | 32320 |
| 16 | 64513 |
| 17 | 128773 |
| 18 | 257041 |
| 19 | 513074 |
| 20 | 1024136 |
| 21 | 2044256 |
| 22 | 4080496 |
| 23 | 8144991 |
| 24 | 16258042 |
| 25 | 32452329 |
| 26 | 64777398 |
| 27 | 129300775 |
| 28 | 258094504 |
| 29 | 515176904 |
| 30 | 1028333569 |
| 31 | 2052634583 |
| 32 | 4097219870 |
| 33 | 8178372713 |