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 | 448 |
| 2 | 30319 |
| 3 | 976640 |
| 4 | 21137959 |
| 5 | 357365350 |
| 6 | 5109144543 |
| 7 | 64737165162 |
| 8 | 749160010737 |
| 9 | 8080813574550 |
| 10 | 82425144219429 |
| 11 | 803491953235264 |
| 12 | 7545414941610145 |
| 13 | 68680800264413920 |
| 14 | 608889093898882615 |
| 15 | 5278006575696293456 |
| 16 | 44873569636443901967 |
| 17 | 375159494582050088590 |
| 18 | 3090799708762482416287 |