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 | 1 |
| 1 | 32 |
| 2 | 1584 |
| 3 | 88418 |
| 4 | 4999752 |
| 5 | 283163450 |
| 6 | 16039767268 |
| 7 | 908585449166 |
| 8 | 51467614908516 |
| 9 | 2915428131919456 |
| 10 | 165146980589118258 |
| 11 | 9354895388703582168 |
| 12 | 529916244425510621368 |
| 13 | 30017569886372177468776 |
| 14 | 1700371542421991554910438 |
| 15 | 96319035592388073867700014 |
| 16 | 5456076149237165677047910650 |