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 | 8 |
| 2 | 79 |
| 3 | 717 |
| 4 | 6458 |
| 5 | 58126 |
| 6 | 523137 |
| 7 | 4708235 |
| 8 | 42374116 |
| 9 | 381367044 |
| 10 | 3432303395 |
| 11 | 30890730553 |
| 12 | 278016574974 |
| 13 | 2502149174762 |
| 14 | 22519342572853 |
| 15 | 202674083155671 |
| 16 | 1824066748401032 |
| 17 | 16416600735609280 |
| 18 | 147749406620483511 |
| 19 | 1329744659584351589 |
| 20 | 11967701936259164290 |