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 | 1 |
| 3 | 2 |
| 4 | 6 |
| 5 | 14 |
| 6 | 34 |
| 7 | 74 |
| 8 | 164 |
| 9 | 345 |
| 10 | 734 |
| 11 | 1523 |
| 12 | 3161 |
| 13 | 6488 |
| 14 | 13302 |
| 15 | 27104 |
| 16 | 55150 |
| 17 | 111823 |
| 18 | 226443 |
| 19 | 457586 |
| 20 | 923721 |
| 21 | 1862183 |
| 22 | 3751130 |
| 23 | 7549354 |
| 24 | 15184291 |
| 25 | 30521675 |
| 26 | 61322711 |
| 27 | 123151315 |
| 28 | 247230601 |
| 29 | 496158486 |
| 30 | 995447739 |
| 31 | 1996668494 |
| 32 | 4004044396 |
| 33 | 8027966324 |
| 34 | 16092990132 |
| 35 | 32255168125 |