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 | 7 |
| 3 | 0 |
| 4 | 3 |
| 5 | 128465555544332211 |
| 6 | 11647163162383665717 |
| 7 | 58097313 |
| 8 | 2859 |
| 9 | 702235353091782071927 |
| 10 | 149 |
| 11 | 814268458452231668262948810358418956591 |
| 12 | 5730248154490578733002999666333 |