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 | 3 |
| 2 | 48 |
| 3 | 531 |
| 4 | 5088 |
| 5 | 44751 |
| 6 | 373404 |
| 7 | 2999985 |
| 8 | 23457672 |
| 9 | 179561859 |
| 10 | 1352017596 |
| 11 | 10042445889 |
| 12 | 73771019064 |
| 13 | 536817918837 |
| 14 | 3875387231484 |
| 15 | 27783517769223 |
| 16 | 197998094612568 |