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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 293 |
| 3 | 7106 |
| 4 | 124636 |
| 5 | 2507807 |
| 6 | 53728922 |
| 7 | 975224769 |
| 8 | 17336813339 |
| 9 | 308906655193 |
| 10 | 5324331825516 |
| 11 | 88599795614719 |
| 12 | 1449812221707335 |
| 13 | 23313054134280890 |
| 14 | 367282089624429463 |
| 15 | 5682414281863178845 |
| 16 | 86571519001530856417 |
| 17 | 1299264182863131989813 |