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 | 3 |
| 2 | 7 |
| 3 | 11 |
| 4 | 71 |
| 5 | 131 |
| 6 | 241 |
| 7 | 443 |
| 8 | 1499 |
| 9 | 196331 |
| 10 | 86992799 |
| 11 | 541292033 |
| 12 | 292997064989357251 |
| 13 | 129824812729295169371 |
| 14 | 238785058551151434437 |
| 15 | 5026368970977284897651 |
| 16 | 105803877284856287511991 |