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 | 1 |
| 2 | 2 |
| 3 | 4 |
| 4 | 16 |
| 5 | 32 |
| 6 | 96 |
| 7 | 384 |
| 8 | 1024 |
| 9 | 2048 |
| 10 | 10240 |
| 11 | 30720 |
| 12 | 73728 |
| 13 | 294912 |
| 14 | 688128 |
| 15 | 1835008 |
| 16 | 12582912 |
| 17 | 25165824 |
| 18 | 56623104 |
| 19 | 283115520 |
| 20 | 629145600 |
| 21 | 1887436800 |
| 22 | 11072962560 |
| 23 | 26575110144 |
| 24 | 57982058496 |
| 25 | 231928233984 |
| 26 | 753766760448 |
| 27 | 1758789107712 |