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 | 0 |
| 2 | 111 |
| 3 | 3815 |
| 4 | 80589 |
| 5 | 2104533 |
| 6 | 58679318 |
| 7 | 1596912288 |
| 8 | 43234526916 |
| 9 | 1172920595173 |
| 10 | 31835504010739 |
| 11 | 863919963653140 |
| 12 | 23443241891419774 |
| 13 | 636163926665744028 |
| 14 | 17263226518198169813 |
| 15 | 468461872965045734740 |
| 16 | 12712366216384150285383 |