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 | 7 |
| 2 | 29 |
| 3 | 1087 |
| 4 | 1999 |
| 5 | 3677 |
| 6 | 6763 |
| 7 | 5487349608898607 |
| 8 | 115507410616162687 |
| 9 | 878001744429057971864287 |
| 10 | 210582098197038415344728317608265501 |
| 11 | 870277059555114378903885645581650740066907 |