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 | 28 |
| 2 | 766 |
| 3 | 34522 |
| 4 | 1706602 |
| 5 | 107863996 |
| 6 | 7379208796 |
| 7 | 542100094312 |
| 8 | 41248685420836 |
| 9 | 3233516261489332 |
| 10 | 260607555289408894 |
| 11 | 21446383929686290726 |
| 12 | 1795656778320649469818 |
| 13 | 152541729206365604807782 |