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 | 61 |
| 2 | 2763 |
| 3 | 38528 |
| 4 | 249856 |
| 5 | 1066590 |
| 6 | 3487246 |
| 7 | 9493504 |
| 8 | 22634496 |
| 9 | 48649086 |
| 10 | 96448478 |
| 11 | 179369856 |
| 12 | 315621376 |
| 13 | 530788622 |
| 14 | 860061996 |
| 15 | 1346126848 |
| 16 | 2046820352 |
| 17 | 3038120316 |
| 18 | 4403100222 |
| 19 | 6254596992 |
| 20 | 8737505280 |
| 21 | 11992903772 |