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 | 2 |
| 2 | 3 |
| 3 | 7 |
| 4 | 43 |
| 5 | 3613 |
| 6 | 65250781 |
| 7 | 38318979202732621 |
| 8 | 8810065002836730577256726488782121 |
| 9 | 6131762382982476362788562753503495060507087787406616806191258317645081 |