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) |
|---|---|
| 0 | 2 |
| 1 | 2 |
| 2 | 2 |
| 3 | 2 |
| 4 | 74 |
| 5 | 112 |
| 6 | 2162 |
| 7 | 63738 |
| 8 | 13220 |
| 9 | 54808 |
| 10 | 3656570 |
| 11 | 6992032 |
| 12 | 125440 |
| 13 | 103859114 |
| 14 | 56414914 |
| 15 | 87888966 |