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 | 3 |
| 3 | 15 |
| 4 | 22 |
| 5 | 12 |
| 6 | 36 |
| 7 | 24 |
| 8 | 66 |
| 9 | 126 |
| 10 | 420 |
| 11 | 90 |
| 12 | 364 |
| 13 | 270 |
| 14 | 264 |
| 15 | 240 |
| 16 | 210 |
| 17 | 672 |
| 18 | 780 |
| 19 | 864 |
| 20 | 1050 |
| 21 | 672 |
| 22 | 720 |
| 23 | 924 |
| 24 | 1092 |
| 25 | 1344 |
| 26 | 3240 |
| 27 | 3312 |
| 28 | 1260 |
| 29 | 3600 |
| 30 | 1200 |
| 31 | 8910 |
| 32 | 1080 |
| 33 | 27104 |
| 34 | 5940 |
| 35 | 1680 |
| 36 | 8568 |
| 37 | 8910 |
| 38 | 14280 |
| 39 | 6384 |
| 40 | 5670 |
| 41 | 5544 |
| 42 | 9600 |
| 43 | 43092 |
| 44 | 42900 |
| 45 | 5280 |
| 46 | 3360 |
| 47 | 9504 |
| 48 | 8580 |
| 49 | 21600 |
| 50 | 54288 |