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 | 5 |
| 3 | 7 |
| 4 | 11 |
| 5 | 13 |
| 6 | 17 |
| 7 | 31 |
| 8 | 41 |
| 9 | 61 |
| 10 | 97 |
| 11 | 103 |
| 12 | 137 |
| 13 | 193 |
| 14 | 241 |
| 15 | 257 |
| 16 | 409 |
| 17 | 641 |
| 18 | 769 |
| 19 | 1021 |
| 20 | 1361 |
| 21 | 1543 |
| 22 | 5441 |
| 23 | 6529 |
| 24 | 7681 |
| 25 | 8161 |
| 26 | 12289 |
| 27 | 15361 |
| 28 | 17477 |
| 29 | 26113 |
| 30 | 30841 |
| 31 | 40961 |
| 32 | 43691 |
| 33 | 61441 |
| 34 | 61681 |
| 35 | 65537 |
| 36 | 82241 |
| 37 | 87041 |
| 38 | 98689 |
| 39 | 131071 |
| 40 | 163841 |
| 41 | 174761 |
| 42 | 328961 |
| 43 | 417793 |
| 44 | 557057 |
| 45 | 786433 |