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 | 7 |
| 3 | 51 |
| 4 | 611 |
| 5 | 19839 |
| 6 | 603331 |
| 7 | 32981935 |
| 8 | 1469991559 |
| 9 | 108336139407 |
| 10 | 17389027481287 |
| 11 | 1334783150250945 |
| 12 | 222909199163881075 |
| 13 | 31099653342061054699 |
| 14 | 2994181661163361882651 |
| 15 | 387134597481460117602345 |
| 16 | 92092112661138292186297999 |
| 17 | 26679920606217066273305101055 |