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) |
|---|---|
| 3 | 4 |
| 4 | 6 |
| 5 | 13372 |
| 6 | 569370 |
| 7 | 4490816 |
| 8 | 20143086 |
| 9 | 67388028 |
| 10 | 187458768 |
| 11 | 458291208 |
| 12 | 1017185004 |
| 13 | 2092976212 |
| 14 | 4050199948 |
| 15 | 7448027128 |
| 16 | 13117064768 |