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 | 14 |
| 2 | 184 |
| 3 | 2336 |
| 4 | 29056 |
| 5 | 356864 |
| 6 | 4347904 |
| 7 | 52699136 |
| 8 | 636583936 |
| 9 | 7672561664 |
| 10 | 92339175424 |
| 11 | 1110217588736 |
| 12 | 13339790934016 |
| 13 | 160214930161664 |
| 14 | 1923678673567744 |
| 15 | 23092940175835136 |
| 16 | 277185650854199296 |
| 17 | 3326790760203812864 |
| 18 | 39925992722073124864 |
| 19 | 479147941461896462336 |