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 | 3 |
| 2 | 14 |
| 3 | 89 |
| 4 | 727 |
| 5 | 7322 |
| 6 | 88067 |
| 7 | 1233815 |
| 8 | 19745180 |
| 9 | 355434387 |
| 10 | 7108803715 |
| 11 | 156394360300 |
| 12 | 3753468860797 |
| 13 | 97590218025159 |
| 14 | 2732526295603774 |
| 15 | 81975790251071765 |
| 16 | 2623225298514438627 |
| 17 | 89189660232355783122 |