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 | 236 |
| 3 | 5742 |
| 4 | 166624 |
| 5 | 4551741 |
| 6 | 130177958 |
| 7 | 3791298670 |
| 8 | 112247761168 |
| 9 | 3359943904563 |
| 10 | 101402229839962 |
| 11 | 3079694743523175 |
| 12 | 94005932598911806 |
| 13 | 2881375795751463371 |
| 14 | 88622772444853629882 |
| 15 | 2733801033248087168072 |