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 | 1 |
| 2 | 3 |
| 3 | 11 |
| 4 | 43 |
| 5 | 2091 |
| 6 | 34859 |
| 7 | 165931 |
| 8 | 537036843 |
| 9 | 576460752840460331 |
| 10 | 154742505487133287202850859 |
| 11 | 40564973949808827981181705422891 |
| 12 | 42535336430091257741749807110676449323 |