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 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 1 |
| 5 | 1 |
| 6 | 1 |
| 7 | 1 |
| 8 | 1 |
| 9 | 1 |
| 10 | 1 |
| 11 | 10 |
| 12 | 19 |
| 13 | 37 |
| 14 | 73 |
| 15 | 145 |
| 16 | 289 |
| 17 | 577 |
| 18 | 1153 |
| 19 | 2305 |
| 20 | 4609 |
| 21 | 9217 |
| 22 | 18424 |
| 23 | 36829 |
| 24 | 73621 |
| 25 | 147169 |
| 26 | 294193 |
| 27 | 588097 |
| 28 | 1175617 |
| 29 | 2350081 |
| 30 | 4697857 |
| 31 | 9391105 |
| 32 | 18772993 |
| 33 | 37527562 |
| 34 | 75018295 |
| 35 | 149962969 |
| 36 | 299778769 |
| 37 | 599263345 |
| 38 | 1197938593 |