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 | 0 |
| 2 | 1 |
| 3 | 2 |
| 4 | 3 |
| 5 | 6 |
| 6 | 24 |
| 7 | 120 |
| 8 | 171 |
| 9 | 177 |
| 10 | 273 |
| 11 | 362 |
| 12 | 440 |
| 13 | 546 |
| 14 | 819 |
| 15 | 1418 |
| 16 | 1560 |
| 17 | 1582 |
| 18 | 1638 |
| 19 | 1760 |
| 20 | 1806 |
| 21 | 2400 |
| 22 | 2841 |
| 23 | 2927 |
| 24 | 3640 |
| 25 | 4706 |
| 26 | 4882 |
| 27 | 5720 |
| 28 | 6328 |
| 29 | 6552 |
| 30 | 7040 |
| 31 | 7224 |
| 32 | 9431 |
| 33 | 9600 |
| 34 | 10101 |
| 35 | 14560 |
| 36 | 20202 |
| 37 | 22880 |
| 38 | 24800 |
| 39 | 25080 |
| 40 | 25312 |
| 41 | 28896 |
| 42 | 32760 |
| 43 | 36974 |
| 44 | 38400 |