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 | 3042 |
| 2 | 1544322 |
| 3 | 314835170 |
| 4 | 34608828930 |
| 5 | 2388631358178 |
| 6 | 113694451659906 |
| 7 | 3979111519381986 |
| 8 | 107295791104411650 |
| 9 | 2310089623221009890 |
| 10 | 40848260232482733186 |
| 11 | 606946694349068289762 |
| 12 | 7722883730528961651202 |