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 | 11 |
| 2 | 13 |
| 3 | 17 |
| 4 | 41 |
| 5 | 73 |
| 6 | 137 |
| 7 | 521 |
| 8 | 1033 |
| 9 | 262153 |
| 10 | 8388617 |
| 11 | 1073741833 |
| 12 | 137438953481 |
| 13 | 140737488355337 |
| 14 | 144115188075855881 |
| 15 | 73786976294838206473 |
| 16 | 4835703278458516698824713 |
| 17 | 39614081257132168796771975177 |
| 18 | 664613997892457936451903530140172297 |