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 | 6 |
| 2 | 10 |
| 3 | 1542 |
| 4 | 77075 |
| 5 | 113939 |
| 6 | 1122772 |
| 7 | 2455891300 |
| 8 | 2830138178 |
| 9 | 136387767490 |
| 10 | 2111259099790 |
| 11 | 3456955336468 |
| 12 | 4653248164310 |
| 13 | 10393297007134 |
| 14 | 321249146279171 |
| 15 | 972926121017616 |
| 16 | 72780032758751764 |