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 | 4 |
| 2 | 40 |
| 3 | 838 |
| 4 | 24937 |
| 5 | 956312 |
| 6 | 44854575 |
| 7 | 2487341346 |
| 8 | 159191134380 |
| 9 | 11548655840414 |
| 10 | 936480474760831 |
| 11 | 83939839868599398 |
| 12 | 8240876863689762815 |
| 13 | 879451562846500470847 |
| 14 | 101365628435563005374930 |