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) |
|---|---|
| 0 | 1 |
| 1 | 1 |
| 2 | 12 |
| 3 | 1 |
| 4 | 24 |
| 5 | 144 |
| 6 | 1 |
| 7 | 36 |
| 8 | 432 |
| 9 | 1728 |
| 10 | 1 |
| 11 | 48 |
| 12 | 864 |
| 13 | 6912 |
| 14 | 20736 |
| 15 | 1 |
| 16 | 60 |
| 17 | 1440 |
| 18 | 17280 |
| 19 | 103680 |
| 20 | 248832 |
| 21 | 1 |
| 22 | 72 |
| 23 | 2160 |
| 24 | 34560 |
| 25 | 311040 |
| 26 | 1492992 |
| 27 | 2985984 |
| 28 | 1 |
| 29 | 84 |
| 30 | 3024 |
| 31 | 60480 |
| 32 | 725760 |
| 33 | 5225472 |
| 34 | 20901888 |
| 35 | 35831808 |
| 36 | 1 |
| 37 | 96 |
| 38 | 4032 |
| 39 | 96768 |
| 40 | 1451520 |
| 41 | 13934592 |
| 42 | 83607552 |
| 43 | 286654464 |
| 44 | 429981696 |