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 | 1 |
| 1 | 0 |
| 2 | 0 |
| 3 | 0 |
| 4 | 0 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 0 |
| 9 | 0 |
| 10 | 1 |
| 11 | 1 |
| 12 | 1 |
| 13 | 1 |
| 14 | 1 |
| 15 | 1 |
| 16 | 1 |
| 17 | 1 |
| 18 | 1 |
| 19 | 1 |
| 20 | 1 |
| 21 | 12 |
| 22 | 618 |
| 23 | 11695 |
| 24 | 112434 |
| 25 | 665219 |
| 26 | 2756389 |
| 27 | 8890492 |
| 28 | 24410518 |
| 29 | 60972735 |
| 30 | 144203914 |
| 31 | 329766287 |
| 32 | 737405644 |
| 33 | 1623087349 |
| 34 | 3531560786 |
| 35 | 7633789153 |
| 36 | 16745585892 |
| 37 | 41482511559 |
| 38 | 152244106469 |
| 39 | 886899776271 |