| V | K | T | M | Blocks | Author | Coauthor(s)/Notes | Date | Inverse | |
| 21 | 13 | 13 | 14 | 17.772 |
Bluskov
|
Coauthor(s): Sidorenko
ex 17778
inverse of 21,8,7,7 from LJCR
| 13/01/2025 |
21,08,07,07
|
Download FREE
|
| 21 | 13 | 13 | 14 | 17.778 |
Bluskov
|
Coauthor(s): Sidorenko
ex 17833
inverse of 21,8,7,7 from LJCR
| 17/05/2024 |
21,08,07,07
|
Download FREE
|
| 21 | 13 | 13 | 14 | 17.833 |
Already known design, view notes
|
Inverse 21,08,07,07
Author: Dietmar Pree
Source: https://www.dmgordon.org/cover/
| 21/12/2021 |
21,08,07,07
|
Download FREE
|