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 | 2037 |
| 1 | 4085 |
| 2 | 8181 |
| 3 | 16373 |
| 4 | 32757 |
| 5 | 65525 |
| 6 | 131061 |
| 7 | 262133 |
| 8 | 524277 |
| 9 | 1048565 |
| 10 | 2097141 |
| 11 | 4194293 |
| 12 | 8388597 |
| 13 | 16777205 |
| 14 | 33554421 |
| 15 | 67108853 |
| 16 | 134217717 |
| 17 | 268435445 |
| 18 | 536870901 |
| 19 | 1073741813 |
| 20 | 2147483637 |
| 21 | 4294967285 |
| 22 | 8589934581 |
| 23 | 17179869173 |