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 | 1 |
| 3 | 5 |
| 4 | 10 |
| 5 | 10 |
| 6 | 515 |
| 7 | 2314 |
| 8 | 2314 |
| 9 | 1536863 |
| 10 | 4053992 |
| 11 | 4053992 |
| 12 | 18584686 |
| 13 | 146237365 |
| 14 | 163039279 |
| 15 | 4775943486 |
| 16 | 13147233734 |
| 17 | 86153130379 |