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) |
|---|---|
| 0 | 1 |
| 1 | 2 |
| 2 | 17 |
| 3 | 424 |
| 4 | 47479 |
| 5 | 16382918 |
| 6 | 25568064053 |
| 7 | 123406890611236 |
| 8 | 2695466010536330131 |
| 9 | 182127929407665421482242 |
| 10 | 55691513601536303088566483057 |
| 11 | 52681462765152620683690039932420064 |
| 12 | 225526519089520161699545888256255284739919 |