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 | 1 |
| 5 | 158658 |
| 6 | 3492397119 |
| 7 | 20560611034067 |
| 8 | 65003434860142353 |
| 9 | 146147123072487323183 |
| 10 | 265778774043268355827614 |
| 11 | 417043663631606786836726209 |
| 12 | 584590572309102875267882670132 |