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 | 7 |
| 2 | 11 |
| 3 | 23 |
| 4 | 47 |
| 5 | 83 |
| 6 | 167 |
| 7 | 263 |
| 8 | 563 |
| 9 | 1187 |
| 10 | 2063 |
| 11 | 4127 |
| 12 | 8423 |
| 13 | 16487 |
| 14 | 32843 |
| 15 | 65543 |
| 16 | 131267 |
| 17 | 262643 |
| 18 | 524387 |
| 19 | 1048703 |
| 20 | 2097779 |
| 21 | 4195259 |
| 22 | 8389163 |
| 23 | 16777907 |
| 24 | 33554519 |
| 25 | 67109543 |
| 26 | 134217827 |
| 27 | 268436867 |
| 28 | 536871263 |
| 29 | 1073742623 |
| 30 | 2147483783 |
| 31 | 4294967387 |
| 32 | 8589935363 |
| 33 | 17179869263 |
| 34 | 34359739319 |