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 | 2 |
| 3 | 3 |
| 4 | 5 |
| 5 | 9 |
| 6 | 16 |
| 7 | 30 |
| 8 | 54 |
| 9 | 104 |
| 10 | 191 |
| 11 | 372 |
| 12 | 692 |
| 13 | 1357 |
| 14 | 2550 |
| 15 | 5021 |
| 16 | 9508 |
| 17 | 18773 |
| 18 | 35766 |
| 19 | 70755 |
| 20 | 135461 |
| 21 | 268365 |
| 22 | 515849 |
| 23 | 1023092 |
| 24 | 1973159 |
| 25 | 3916831 |
| 26 | 7575470 |
| 27 | 15048428 |
| 28 | 29175431 |
| 29 | 57990158 |
| 30 | 112665488 |
| 31 | 224048847 |
| 32 | 436089113 |
| 33 | 867581269 |
| 34 | 1691392152 |