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) |
|---|---|
| 0 | 0 |
| 1 | 3 |
| 2 | 3 |
| 3 | 6 |
| 4 | 18 |
| 5 | 24 |
| 6 | 60 |
| 7 | 120 |
| 8 | 216 |
| 9 | 480 |
| 10 | 912 |
| 11 | 1824 |
| 12 | 3744 |
| 13 | 7296 |
| 14 | 14784 |
| 15 | 29568 |
| 16 | 58752 |
| 17 | 118272 |
| 18 | 235776 |
| 19 | 471552 |
| 20 | 944640 |
| 21 | 1886208 |
| 22 | 3775488 |
| 23 | 7550976 |
| 24 | 15095808 |
| 25 | 30203904 |
| 26 | 60395520 |
| 27 | 120791040 |
| 28 | 241606656 |
| 29 | 483164160 |
| 30 | 966377472 |
| 31 | 1932754944 |
| 32 | 3865411584 |
| 33 | 7731019776 |
| 34 | 15461842944 |