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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 4 |
| 5 | 8 |
| 6 | 14 |
| 7 | 28 |
| 8 | 54 |
| 9 | 104 |
| 10 | 201 |
| 11 | 386 |
| 12 | 745 |
| 13 | 1436 |
| 14 | 2768 |
| 15 | 5336 |
| 16 | 10284 |
| 17 | 19824 |
| 18 | 38212 |
| 19 | 73656 |
| 20 | 141977 |
| 21 | 273668 |
| 22 | 527513 |
| 23 | 1016814 |
| 24 | 1959972 |
| 25 | 3777968 |
| 26 | 7282266 |
| 27 | 14037020 |
| 28 | 27057226 |
| 29 | 52154480 |
| 30 | 100530993 |
| 31 | 193779718 |
| 32 | 373522417 |
| 33 | 719987608 |
| 34 | 1387820736 |
| 35 | 2675110480 |