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 | 1 |
| 2 | 2673 |
| 3 | 811538 |
| 4 | 5978882 |
| 5 | 137149922 |
| 6 | 292965218 |
| 7 | 779888018 |
| 8 | 5745705602 |
| 9 | 105760443698 |
| 10 | 49511121842 |
| 11 | 1872511131218 |
| 12 | 281539574498 |
| 13 | 17673688436978 |
| 14 | 17873514984962 |
| 15 | 253930825318898 |
| 16 | 7865870969138 |
| 17 | 768054952462322 |