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 | 86 |
| 2 | 1600 |
| 3 | 14751 |
| 4 | 89380 |
| 5 | 408222 |
| 6 | 1519738 |
| 7 | 4844576 |
| 8 | 13669953 |
| 9 | 34953776 |
| 10 | 82399174 |
| 11 | 181434331 |
| 12 | 376946128 |
| 13 | 744873156 |
| 14 | 1409068188 |
| 15 | 2565196232 |
| 16 | 4513845865 |
| 17 | 7705502706 |
| 18 | 12800568660 |
| 19 | 20748212991 |
| 20 | 32888515396 |
| 21 | 51083111090 |
| 22 | 77880377510 |