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) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 2 |
| 5 | 1 |
| 6 | 12 |
| 7 | 1 |
| 8 | 16 |
| 9 | 6 |
| 10 | 88 |
| 11 | 1 |
| 12 | 960 |
| 13 | 1 |
| 14 | 656 |
| 15 | 264 |
| 16 | 896 |
| 17 | 1 |
| 18 | 48960 |
| 19 | 1 |
| 20 | 53504 |
| 21 | 1968 |
| 22 | 36544 |
| 23 | 1 |
| 24 | 2795520 |
| 25 | 44 |
| 26 | 272768 |
| 27 | 2448 |
| 28 | 2980864 |
| 29 | 1 |
| 30 | 1547335680 |
| 31 | 1 |
| 32 | 2781184 |
| 33 | 109632 |
| 34 | 15196672 |
| 35 | 14432 |
| 36 | 8635760640 |
| 37 | 1 |
| 38 | 113429504 |
| 39 | 818304 |
| 40 | 8677064704 |
| 41 | 1 |
| 42 | 4808968273920 |
| 43 | 1 |
| 44 | 9252356096 |
| 45 | 415337472 |
| 46 | 6319476736 |
| 47 | 1 |
| 48 | 26795484119040 |
| 49 | 328 |
| 50 | 3584860454912 |