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 | 0 |
| 3 | 0 |
| 4 | 8 |
| 5 | 0 |
| 6 | 0 |
| 7 | 0 |
| 8 | 24 |
| 9 | 27 |
| 10 | 20 |
| 11 | 12 |
| 12 | 24 |
| 13 | 112 |
| 14 | 126 |
| 15 | 120 |
| 16 | 48 |
| 17 | 180 |
| 18 | 324 |
| 19 | 140 |
| 20 | 0 |
| 21 | 420 |
| 22 | 460 |
| 23 | 24 |
| 24 | 360 |
| 25 | 275 |
| 26 | 510 |
| 27 | 0 |
| 28 | 532 |
| 29 | 720 |
| 30 | 390 |
| 31 | 672 |
| 32 | 96 |
| 33 | 318 |
| 34 | 406 |
| 35 | 840 |
| 36 | 612 |
| 37 | 68 |
| 38 | 630 |
| 39 | 144 |
| 40 | 1480 |
| 41 | 1260 |
| 42 | 1680 |
| 43 | 676 |
| 44 | 156 |
| 45 | 0 |
| 46 | 344 |
| 47 | 1296 |
| 48 | 1344 |
| 49 | 343 |
| 50 | 1800 |
| 51 | 72 |
| 52 | 392 |
| 53 | 1566 |
| 54 | 540 |
| 55 | 2520 |
| 56 | 1680 |