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 | 7 |
| 2 | 81 |
| 3 | 1399 |
| 4 | 32289 |
| 5 | 931687 |
| 6 | 32259441 |
| 7 | 1303134679 |
| 8 | 60160827969 |
| 9 | 3124574220487 |
| 10 | 180312309395601 |
| 11 | 11445969681199159 |
| 12 | 792626097462398049 |
| 13 | 59462922484586318887 |
| 14 | 4804064349575887075761 |
| 15 | 415847988794676360818839 |
| 16 | 38396277196654611908582529 |
| 17 | 3766800071614388562865514887 |