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 | 6 |
| 1 | 7 |
| 2 | 20 |
| 3 | 47 |
| 4 | 114 |
| 5 | 161 |
| 6 | 2046 |
| 7 | 2207 |
| 8 | 6460 |
| 9 | 15127 |
| 10 | 36714 |
| 11 | 51841 |
| 12 | 658806 |
| 13 | 710647 |
| 14 | 2080100 |
| 15 | 4870847 |
| 16 | 11821794 |
| 17 | 16692641 |
| 18 | 212133486 |
| 19 | 228826127 |
| 20 | 669785740 |
| 21 | 1568397607 |
| 22 | 3806580954 |
| 23 | 5374978561 |
| 24 | 68306323686 |