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 | 15 |
| 2 | 295 |
| 3 | 4238 |
| 4 | 30157 |
| 5 | 96844 |
| 6 | 6814915 |
| 7 | 221032490 |
| 8 | 3642791292 |
| 9 | 29879423064 |
| 10 | 103128216612 |
| 11 | 8111212273960 |
| 12 | 269665188133693 |