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 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 27 |
| 5 | 38073 |
| 6 | 16938566 |
| 7 | 3907656327 |
| 8 | 625715497344 |
| 9 | 79799396735243 |
| 10 | 8687099045170277 |
| 11 | 838032011887365999 |
| 12 | 73212582945836596465 |
| 13 | 5871528524308567281095 |
| 14 | 436271925594121492739505 |