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 | 5 |
| 7 | 11 |
| 8 | 21 |
| 9 | 46 |
| 10 | 96 |
| 11 | 216 |
| 12 | 482 |
| 13 | 1121 |
| 14 | 2633 |
| 15 | 6334 |
| 16 | 15414 |
| 17 | 38132 |
| 18 | 95321 |
| 19 | 241029 |
| 20 | 614862 |
| 21 | 1582030 |
| 22 | 4099922 |
| 23 | 10697038 |
| 24 | 28074752 |
| 25 | 74086468 |
| 26 | 196469601 |
| 27 | 523383136 |
| 28 | 1400048426 |
| 29 | 3759508536 |
| 30 | 10131089877 |
| 31 | 27391132238 |
| 32 | 74283533023 |
| 33 | 202030012554 |
| 34 | 550934011491 |
| 35 | 1506161266348 |