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 | 16 |
| 2 | 478 |
| 3 | 13977 |
| 4 | 394509 |
| 5 | 11334364 |
| 6 | 326882784 |
| 7 | 9402398952 |
| 8 | 270516990628 |
| 9 | 7789048968124 |
| 10 | 224284362847360 |
| 11 | 6457977012007180 |
| 12 | 185957590016422087 |
| 13 | 5354807669541831222 |
| 14 | 154196812648221842975 |
| 15 | 4440254588265618959278 |