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 | 2 |
| 2 | 257 |
| 3 | 65537 |
| 4 | 37588592026706177 |
| 5 | 92170395205042177 |
| 6 | 147578905600000001 |
| 7 | 284936905588473857 |
| 8 | 3503536769037500417 |
| 9 | 11007531417600000001 |
| 10 | 11763130845074473217 |
| 11 | 47330370277129322497 |
| 12 | 50024641296100000001 |
| 13 | 76872571987558646017 |
| 14 | 416806419029812551937 |