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 | 0 |
| 1 | 0 |
| 2 | 0 |
| 3 | 1 |
| 4 | 1 |
| 5 | 3 |
| 6 | 4 |
| 7 | 8 |
| 8 | 13 |
| 9 | 26 |
| 10 | 45 |
| 11 | 83 |
| 12 | 152 |
| 13 | 281 |
| 14 | 523 |
| 15 | 974 |
| 16 | 1822 |
| 17 | 3451 |
| 18 | 6490 |
| 19 | 12348 |
| 20 | 23389 |
| 21 | 44598 |
| 22 | 85076 |
| 23 | 162735 |
| 24 | 311721 |
| 25 | 598669 |
| 26 | 1150613 |
| 27 | 2215562 |
| 28 | 4271844 |
| 29 | 8247356 |
| 30 | 15941844 |
| 31 | 30849114 |
| 32 | 59758104 |
| 33 | 115878009 |
| 34 | 224900328 |