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 | 7 |
| 2 | 85 |
| 3 | 2369 |
| 4 | 127796 |
| 5 | 11417607 |
| 6 | 1536493698 |
| 7 | 292107021267 |
| 8 | 74862835208823 |
| 9 | 24954353268384100 |
| 10 | 10517125257007205287 |
| 11 | 5477412008465124456814 |
| 12 | 3459179319447147792978276 |
| 13 | 2607366906177104506271124036 |