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 | 0 |
| 2 | 0 |
| 3 | 4 |
| 4 | 12 |
| 5 | 16 |
| 6 | 32 |
| 7 | 64 |
| 8 | 128 |
| 9 | 384 |
| 10 | 704 |
| 11 | 896 |
| 12 | 2304 |
| 13 | 4608 |
| 14 | 7680 |
| 15 | 16384 |
| 16 | 36864 |
| 17 | 65536 |
| 18 | 143360 |
| 19 | 303104 |
| 20 | 565248 |
| 21 | 1245184 |
| 22 | 2473984 |
| 23 | 4521984 |
| 24 | 9961472 |
| 25 | 19070976 |
| 26 | 35389440 |
| 27 | 78643200 |
| 28 | 154664960 |
| 29 | 289931264 |
| 30 | 635437056 |
| 31 | 1309671424 |
| 32 | 2503999488 |
| 33 | 5280628736 |