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 | 4 |
| 4 | 1 |
| 5 | 24 |
| 6 | 4 |
| 7 | 192 |
| 8 | 1 |
| 9 | 13 |
| 10 | 24 |
| 11 | 2304 |
| 12 | 4 |
| 13 | 32256 |
| 14 | 192 |
| 15 | 78 |
| 16 | 1 |
| 17 | 580608 |
| 18 | 13 |
| 19 | 11612160 |
| 20 | 24 |
| 21 | 624 |
| 22 | 2304 |
| 23 | 278691840 |
| 24 | 4 |
| 25 | 403 |
| 26 | 32256 |
| 27 | 40 |
| 28 | 192 |
| 29 | 8360755200 |
| 30 | 78 |
| 31 | 267544166400 |
| 32 | 1 |
| 33 | 7488 |
| 34 | 580608 |
| 35 | 3224 |
| 36 | 13 |
| 37 | 10166678323200 |
| 38 | 11612160 |
| 39 | 104832 |
| 40 | 24 |
| 41 | 427000489574400 |
| 42 | 624 |
| 43 | 18788021541273600 |
| 44 | 2304 |
| 45 | 240 |
| 46 | 278691840 |
| 47 | 901825033981132800 |
| 48 | 4 |
| 49 | 22971 |
| 50 | 403 |