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 | 2 |
| 3 | 33 |
| 4 | 2093 |
| 5 | 239723 |
| 6 | 29918977 |
| 7 | 17597346187 |
| 8 | 17155385292853 |
| 9 | 10633323942990239 |
| 10 | 15790705299133143889 |