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) |
|---|---|
| 3 | 41676 |
| 4 | 725408 |
| 5 | 10489660 |
| 6 | 136547568 |
| 7 | 1660652028 |
| 8 | 19269238080 |
| 9 | 216100013292 |
| 10 | 2362533383920 |
| 11 | 25329574375116 |
| 12 | 267467192029728 |
| 13 | 2790488055689724 |
| 14 | 28832824624840880 |
| 15 | 295579830237167580 |
| 16 | 3010545385659678848 |
| 17 | 30497626012737910348 |
| 18 | 307541698683047474544 |