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 | 2 |
| 3 | 4 |
| 4 | 8 |
| 5 | 12 |
| 6 | 24 |
| 7 | 32 |
| 8 | 64 |
| 9 | 128 |
| 10 | 256 |
| 11 | 320 |
| 12 | 640 |
| 13 | 768 |
| 14 | 1536 |
| 15 | 3072 |
| 16 | 6144 |
| 17 | 7168 |
| 18 | 14336 |
| 19 | 16384 |
| 20 | 32768 |
| 21 | 65536 |
| 22 | 131072 |
| 23 | 147456 |
| 24 | 294912 |
| 25 | 589824 |
| 26 | 1179648 |
| 27 | 2359296 |
| 28 | 4718592 |
| 29 | 5242880 |
| 30 | 10485760 |
| 31 | 11534336 |
| 32 | 23068672 |
| 33 | 46137344 |
| 34 | 92274688 |
| 35 | 184549376 |
| 36 | 369098752 |
| 37 | 402653184 |