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 | 3 |
| 1 | 2 |
| 2 | 20 |
| 3 | 8 |
| 4 | 144 |
| 5 | 32 |
| 6 | 1088 |
| 7 | 128 |
| 8 | 8448 |
| 9 | 512 |
| 10 | 66560 |
| 11 | 2048 |
| 12 | 528384 |
| 13 | 8192 |
| 14 | 4210688 |
| 15 | 32768 |
| 16 | 33619968 |
| 17 | 131072 |
| 18 | 268697600 |
| 19 | 524288 |
| 20 | 2148532224 |
| 21 | 2097152 |
| 22 | 17184063488 |
| 23 | 8388608 |
| 24 | 137455730688 |
| 25 | 33554432 |
| 26 | 1099578736640 |
| 27 | 134217728 |
| 28 | 8796361457664 |