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 | 42 |
| 2 | 3472 |
| 3 | 56896 |
| 4 | 544635 |
| 5 | 2056320 |
| 6 | 4021920 |
| 7 | 4357080 |
| 8 | 6420960 |
| 9 | 234852352 |
| 10 | 1980840960 |
| 11 | 19017782784 |
| 12 | 21231974400 |
| 13 | 60129083392 |
| 14 | 962070839296 |
| 15 | 47911115564928 |
| 16 | 53603154468864 |
| 17 | 46152495793603584 |
| 18 | 243298521749451168 |
| 19 | 8785228837239816192 |