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 | 28 |
| 3 | 40 |
| 4 | 343 |
| 5 | 10744 |
| 6 | 18506 |
| 7 | 18658 |
| 8 | 22360 |
| 9 | 34486 |
| 10 | 289912 |
| 11 | 293710 |
| 12 | 565213 |
| 13 | 722765 |
| 14 | 2469287 |
| 15 | 13231942 |
| 16 | 86523219 |