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 | 372 |
| 2 | 1856 |
| 3 | 9052 |
| 4 | 45648 |
| 5 | 235538 |
| 6 | 1215616 |
| 7 | 6233356 |
| 8 | 31868448 |
| 9 | 163014678 |
| 10 | 834763824 |
| 11 | 4276077566 |
| 12 | 21900661172 |
| 13 | 112149148911 |
| 14 | 574278200480 |
| 15 | 2940790043388 |
| 16 | 15059692639376 |
| 17 | 77120252989206 |
| 18 | 394927990211792 |
| 19 | 2022395235481866 |