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 | 36 |
| 3 | 384 |
| 4 | 5460 |
| 5 | 84816 |
| 6 | 1347396 |
| 7 | 21521184 |
| 8 | 344194740 |
| 9 | 5506552176 |
| 10 | 88102619556 |
| 11 | 1409633169984 |
| 12 | 22554096102420 |
| 13 | 360865400232336 |
| 14 | 5773845857280516 |
| 15 | 92381531540306784 |
| 16 | 1478104495968880500 |
| 17 | 23649671900884069296 |
| 18 | 378394750275931314276 |
| 19 | 6054316003862820691584 |