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 | 7 |
| 3 | 63 |
| 4 | 716 |
| 5 | 10050 |
| 6 | 167707 |
| 7 | 3246985 |
| 8 | 71601112 |
| 9 | 1772086842 |
| 10 | 48644809445 |
| 11 | 1466863148619 |
| 12 | 48202848917302 |
| 13 | 1714563272612502 |