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 | 70 |
| 3 | 889 |
| 4 | 13853 |
| 5 | 258146 |
| 6 | 5633264 |
| 7 | 141487178 |
| 8 | 4031806898 |
| 9 | 128792484219 |
| 10 | 4565493788191 |
| 11 | 178051324792642 |
| 12 | 7583098790779316 |
| 13 | 350435514388561567 |
| 14 | 17474323210108996497 |
| 15 | 935597107908721785211 |
| 16 | 53553176933223851350863 |