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 | 8 |
| 3 | 26 |
| 4 | 88 |
| 5 | 2108238 |
| 6 | 8165033238 |
| 7 | 876154475408 |
| 8 | 2538991467974 |
| 9 | 2728823494615908 |
| 10 | 253863101778786762 |
| 11 | 815277035409723028858892 |