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 | 1 |
| 2 | 2 |
| 3 | 14 |
| 4 | 172 |
| 5 | 4354 |
| 6 | 211588 |
| 7 | 20185842 |
| 8 | 3737615288 |
| 9 | 1349721589622 |
| 10 | 948593164919044 |
| 11 | 1298594593323021084 |
| 12 | 3461591189556243601228 |
| 13 | 17969903126848842785918376 |
| 14 | 181660279488635404176787338286 |