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 | 81 |
| 2 | 87 |
| 3 | 97 |
| 4 | 117 |
| 5 | 153 |
| 6 | 225 |
| 7 | 361 |
| 8 | 633 |
| 9 | 1161 |
| 10 | 2217 |
| 11 | 4297 |
| 12 | 8457 |
| 13 | 16713 |
| 14 | 33225 |
| 15 | 66121 |
| 16 | 131913 |
| 17 | 263241 |
| 18 | 525897 |
| 19 | 1050697 |
| 20 | 2100297 |
| 21 | 4198473 |
| 22 | 8394825 |
| 23 | 16785481 |
| 24 | 33566793 |
| 25 | 67125321 |
| 26 | 134242377 |
| 27 | 268468297 |
| 28 | 536920137 |
| 29 | 1073807433 |
| 30 | 2147582025 |
| 31 | 4295098441 |
| 32 | 8590131273 |
| 33 | 17180131401 |