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 | 30 |
| 2 | 969 |
| 3 | 9684 |
| 4 | 54045 |
| 5 | 213042 |
| 6 | 667065 |
| 7 | 1773384 |
| 8 | 4171869 |
| 9 | 8925990 |
| 10 | 17704137 |
| 11 | 33006300 |
| 12 | 58441149 |
| 13 | 99058554 |
| 14 | 161742585 |
| 15 | 255670032 |
| 16 | 392839485 |
| 17 | 588676014 |
| 18 | 862716489 |
| 19 | 1239380580 |
| 20 | 1748832477 |
| 21 | 2427938370 |
| 22 | 3321324729 |
| 23 | 4482542424 |