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 | 3 |
| 2 | 33 |
| 3 | 30 |
| 4 | 36 |
| 5 | 32 |
| 6 | 324 |
| 7 | 320 |
| 8 | 384 |
| 9 | 3200 |
| 10 | 3456 |
| 11 | 3072 |
| 12 | 31104 |
| 13 | 30720 |
| 14 | 36864 |
| 15 | 32768 |
| 16 | 331776 |
| 17 | 327680 |
| 18 | 393216 |
| 19 | 3276800 |
| 20 | 3538944 |
| 21 | 3145728 |
| 22 | 31850496 |
| 23 | 31457280 |
| 24 | 37748736 |
| 25 | 33554432 |
| 26 | 339738624 |
| 27 | 301989888 |
| 28 | 3057647616 |
| 29 | 3019898880 |
| 30 | 3623878656 |