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 | 0 |
| 1 | 1 |
| 2 | 832 |
| 3 | 252207 |
| 4 | 35241608 |
| 5 | 2351580473 |
| 6 | 89216898630 |
| 7 | 2194653376016 |
| 8 | 38376657658125 |
| 9 | 509484171323720 |
| 10 | 5390386822995890 |
| 11 | 47150458233195944 |
| 12 | 350827631527584993 |
| 13 | 2271025998493100911 |
| 14 | 13023793690772493636 |