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 | 4 |
| 2 | 26 |
| 3 | 302 |
| 4 | 6487 |
| 5 | 6572211 |
| 6 | 9962261161 |
| 7 | 20114953831 |
| 8 | 72323276790496009462 |
| 9 | 9563112289639086692081 |
| 10 | 639278857103151880047311 |
| 11 | 13532727020275663728604021 |
| 12 | 91820624869556443938377242 |
| 13 | 629083300047263751187646851269521 |
| 14 | 40032985928622992884587988549627831 |