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 | 7 |
| 2 | 119 |
| 3 | 4564 |
| 4 | 32900 |
| 5 | 1161895 |
| 6 | 8359127 |
| 7 | 295119412 |
| 8 | 2123188004 |
| 9 | 74959171399 |
| 10 | 539281396535 |
| 11 | 19039334418580 |
| 12 | 136975351534532 |
| 13 | 4835915983150567 |
| 14 | 34791200008377239 |
| 15 | 1228303620385828084 |
| 16 | 8836827826776286820 |
| 17 | 311984283662017185415 |
| 18 | 2244519476801168477687 |