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 | 1 |
| 2 | 49 |
| 3 | 1632 |
| 4 | 46557 |
| 5 | 1225194 |
| 6 | 30754544 |
| 7 | 749866185 |
| 8 | 17950397258 |
| 9 | 424660442975 |
| 10 | 9969967594443 |
| 11 | 232909647253690 |
| 12 | 5423397612311731 |
| 13 | 126017939209370356 |
| 14 | 2924071505958808678 |
| 15 | 67786971099219351975 |
| 16 | 1570519781573431498844 |