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 | 26 |
| 3 | 10164 |
| 4 | 2097080 |
| 5 | 311400852 |
| 6 | 37593032352 |
| 7 | 3874477609666 |
| 8 | 349607878149545 |
| 9 | 28080454247154740 |
| 10 | 2032851550702238097 |
| 11 | 133978506596448850047 |
| 12 | 8105582683474629450826 |