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 | 15 |
| 2 | 1264 |
| 3 | 49702 |
| 4 | 543906 |
| 5 | 4010258 |
| 6 | 16365681 |
| 7 | 55643290 |
| 8 | 210405148 |
| 9 | 904155053 |
| 10 | 4384022592 |
| 11 | 21350702064 |
| 12 | 105038486755 |
| 13 | 514302715276 |
| 14 | 2558243582787 |