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 | 5 |
| 2 | 61 |
| 3 | 1225 |
| 4 | 34361 |
| 5 | 1238221 |
| 6 | 54516085 |
| 7 | 2836074641 |
| 8 | 170218994545 |
| 9 | 11577727703701 |
| 10 | 880077524475821 |
| 11 | 73938089783672665 |
| 12 | 6803184337622361001 |
| 13 | 680392371852019772765 |
| 14 | 73489179344355757819621 |
| 15 | 8525425196317119926848801 |
| 16 | 1057226213522667226687070945 |