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 | 27 |
| 2 | 1615 |
| 3 | 1885 |
| 4 | 218984 |
| 5 | 4218475 |
| 6 | 312016315 |
| 7 | 746314601 |
| 8 | 1125845307 |
| 9 | 1132343549 |
| 10 | 1296114929 |
| 11 | 9016730984 |
| 12 | 303419868239 |
| 13 | 1197056419121 |
| 14 | 2065971192041 |
| 15 | 2948269852109 |
| 16 | 4562970154601 |