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 | 10 |
| 2 | 19 |
| 3 | 199 |
| 4 | 37819 |
| 5 | 1429936399 |
| 6 | 2044718092315659619 |
| 7 | 4180872077042990313463432060226288599 |
| 8 | 17479691324597767931283328689425028720038746822457352536058485868000785419 |