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 | 1 |
| 1 | 1 |
| 2 | 1 |
| 3 | 3 |
| 4 | 5 |
| 5 | 12 |
| 6 | 24 |
| 7 | 52 |
| 8 | 108 |
| 9 | 224 |
| 10 | 464 |
| 11 | 944 |
| 12 | 1936 |
| 13 | 3904 |
| 14 | 7936 |
| 15 | 15936 |
| 16 | 32192 |
| 17 | 64512 |
| 18 | 129792 |
| 19 | 259840 |
| 20 | 521472 |
| 21 | 1043456 |
| 22 | 2091008 |
| 23 | 4183040 |
| 24 | 8375296 |
| 25 | 16752640 |
| 26 | 33525760 |
| 27 | 67055616 |
| 28 | 134156288 |
| 29 | 268320768 |
| 30 | 536739840 |
| 31 | 1073496064 |
| 32 | 2147205120 |
| 33 | 4294443008 |
| 34 | 8589344768 |