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 | 3 |
| 2 | 2050 |
| 3 | 4097 |
| 4 | 6144 |
| 5 | 177149 |
| 6 | 179196 |
| 7 | 181243 |
| 8 | 354295 |
| 9 | 356342 |
| 10 | 531441 |
| 11 | 4194306 |
| 12 | 4196353 |
| 13 | 4198400 |
| 14 | 4371452 |
| 15 | 4373499 |
| 16 | 4548598 |
| 17 | 8388609 |
| 18 | 8390656 |
| 19 | 8565755 |
| 20 | 12582912 |
| 21 | 48828127 |
| 22 | 48830174 |
| 23 | 48832221 |
| 24 | 49005273 |
| 25 | 49007320 |
| 26 | 49182419 |
| 27 | 53022430 |