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 | 3 |
| 2 | 67 |
| 3 | 367 |
| 4 | 7879 |
| 5 | 36787 |
| 6 | 367879 |
| 7 | 8794411 |
| 8 | 21595523 |
| 9 | 867445811 |
| 10 | 2159552377 |
| 11 | 23215955237 |
| 12 | 794411714423 |
| 13 | 9441171442321 |
| 14 | 57147274345919 |
| 15 | 767834507836801 |
| 16 | 4581113103176783 |
| 17 | 67834507836801697 |
| 18 | 595523770161460867 |
| 19 | 3176783450783680169 |