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) |
|---|---|
| 9 | 1 |
| 10 | 0 |
| 11 | 0 |
| 12 | 9 |
| 13 | 0 |
| 14 | 0 |
| 15 | 36 |
| 16 | 0 |
| 17 | 0 |
| 18 | 93 |
| 19 | 0 |
| 20 | 0 |
| 21 | 198 |
| 22 | 0 |
| 23 | 0 |
| 24 | 378 |
| 25 | 0 |
| 26 | 0 |
| 27 | 624 |
| 28 | 9 |
| 29 | 0 |
| 30 | 918 |
| 31 | 72 |
| 32 | 0 |
| 33 | 1269 |
| 34 | 252 |
| 35 | 0 |
| 36 | 1597 |
| 37 | 576 |
| 38 | 0 |
| 39 | 1836 |
| 40 | 1134 |
| 41 | 0 |
| 42 | 2025 |
| 43 | 2025 |
| 44 | 0 |
| 45 | 2058 |
| 46 | 3096 |
| 47 | 36 |
| 48 | 1926 |
| 49 | 4356 |
| 50 | 252 |
| 51 | 1764 |
| 52 | 5877 |
| 53 | 756 |
| 54 | 1470 |
| 55 | 7182 |
| 56 | 1512 |
| 57 | 1134 |
| 58 | 8388 |
| 59 | 2772 |
| 60 | 882 |
| 61 | 9576 |
| 62 | 4608 |
| 63 | 588 |
| 64 | 10035 |
| 65 | 6552 |
| 66 | 462 |