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 | 1183 |
| 3 | 22654 |
| 4 | 566656 |
| 5 | 10002542 |
| 6 | 192100836 |
| 7 | 3258530608 |
| 8 | 56916559941 |
| 9 | 940858829922 |
| 10 | 15693717431672 |
| 11 | 254647316356204 |
| 12 | 4136953520012344 |
| 13 | 66194476183413344 |
| 14 | 1057401264518371179 |
| 15 | 16737766253590304358 |