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 | 1 |
| 2 | 3 |
| 3 | 7 |
| 4 | 15 |
| 5 | 30 |
| 6 | 58 |
| 7 | 110 |
| 8 | 206 |
| 9 | 383 |
| 10 | 709 |
| 11 | 1309 |
| 12 | 2413 |
| 13 | 4444 |
| 14 | 8180 |
| 15 | 15052 |
| 16 | 27692 |
| 17 | 50941 |
| 18 | 93703 |
| 19 | 172355 |
| 20 | 317019 |
| 21 | 583098 |
| 22 | 1072494 |
| 23 | 1972634 |
| 24 | 3628250 |
| 25 | 6673403 |
| 26 | 12274313 |
| 27 | 22575993 |
| 28 | 41523737 |
| 29 | 76374072 |
| 30 | 140473832 |
| 31 | 258371672 |
| 32 | 475219608 |
| 33 | 874065145 |
| 34 | 1607656459 |
| 35 | 2956941247 |