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 | 1 |
| 3 | 0 |
| 4 | 2 |
| 5 | 1 |
| 6 | 0 |
| 7 | 6 |
| 8 | 4 |
| 9 | 1 |
| 10 | 0 |
| 11 | 18 |
| 12 | 16 |
| 13 | 6 |
| 14 | 1 |
| 15 | 0 |
| 16 | 54 |
| 17 | 60 |
| 18 | 30 |
| 19 | 8 |
| 20 | 1 |
| 21 | 0 |
| 22 | 162 |
| 23 | 216 |
| 24 | 134 |
| 25 | 48 |
| 26 | 10 |
| 27 | 1 |
| 28 | 0 |
| 29 | 486 |
| 30 | 756 |
| 31 | 558 |
| 32 | 248 |
| 33 | 70 |
| 34 | 12 |
| 35 | 1 |
| 36 | 0 |
| 37 | 1458 |
| 38 | 2592 |
| 39 | 2214 |
| 40 | 1168 |
| 41 | 410 |
| 42 | 96 |
| 43 | 14 |
| 44 | 1 |
| 45 | 0 |
| 46 | 4374 |
| 47 | 8748 |
| 48 | 8478 |
| 49 | 5160 |
| 50 | 2150 |
| 51 | 628 |
| 52 | 126 |
| 53 | 16 |