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 | 13 |
| 2 | 67 |
| 3 | 229 |
| 4 | 6547 |
| 5 | 129140149 |
| 6 | 1162261453 |
| 7 | 68630377364869 |
| 8 | 145557834293068928043467566190278008218249525830565939618467 |