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 | 244672067 |
| 3 | 14551915378461487103639747 |
| 4 | 3552713678880267372432493847753987 |
| 5 | 211758236813575107295480170109084902352995775163267 |