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 | 17 |
| 4 | 31 |
| 5 | 193 |
| 6 | 653 |
| 7 | 1201 |
| 8 | 46499 |
| 9 | 532159 |
| 10 | 3311233 |
| 11 | 128199521 |
| 12 | 20512526282340991 |
| 13 | 6036724301884645488192191 |
| 14 | 2170304813579195568101904406358277391153 |