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 | 6 |
| 2 | 206 |
| 3 | 5637 |
| 4 | 145822 |
| 5 | 4219759 |
| 6 | 121021322 |
| 7 | 3595841703 |
| 8 | 107047691558 |
| 9 | 3230133817408 |
| 10 | 97858271141246 |
| 11 | 2984356113230844 |
| 12 | 91344755158599286 |
| 13 | 2807007399506811549 |
| 14 | 86507823542467916384 |
| 15 | 2673333189589167211891 |