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 | 64 |
| 3 | 65 |
| 4 | 4096 |
| 5 | 4097 |
| 6 | 4160 |
| 7 | 4161 |
| 8 | 262144 |
| 9 | 262145 |
| 10 | 262208 |
| 11 | 262209 |
| 12 | 266240 |
| 13 | 266241 |
| 14 | 266304 |
| 15 | 266305 |
| 16 | 16777216 |
| 17 | 16777217 |
| 18 | 16777280 |
| 19 | 16777281 |
| 20 | 16781312 |
| 21 | 16781313 |
| 22 | 16781376 |
| 23 | 16781377 |
| 24 | 17039360 |
| 25 | 17039361 |
| 26 | 17039424 |
| 27 | 17039425 |
| 28 | 17043456 |