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) |
|---|---|
| 0 | 1 |
| 1 | 6 |
| 2 | 11 |
| 3 | 71 |
| 4 | 4691 |
| 5 | 21982031 |
| 6 | 483209576974811 |
| 7 | 233491495280173380882643611671 |
| 8 | 54518278368171228201482876236565907627201914279213829353891 |