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 | 161 |
| 3 | 219 |
| 4 | 5901 |
| 5 | 28379 |
| 6 | 332827 |
| 7 | 2225195 |
| 8 | 18399217 |
| 9 | 129137886 |
| 10 | 953809557 |
| 11 | 6704767056 |
| 12 | 47777146765 |
| 13 | 335147823244 |
| 14 | 2360792885729 |
| 15 | 16540740396740 |
| 16 | 116054610957529 |
| 17 | 812699929957712 |
| 18 | 5694036707961181 |
| 19 | 39865043590813086 |