| 21 | x | 1 | = | 21> | 
| 21 | x | 2 | = | 42> | 
| 21 | x | 3 | = | 63> | 
| 21 | x | 4 | = | 84> | 
| 21 | x | 5 | = | 105> | 
| 21 | x | 6 | = | 126> | 
| 21 | x | 7 | = | 147> | 
| 21 | x | 8 | = | 168> | 
| 21 | x | 9 | = | 189> | 
| 21 | x | 10 | = | 210> | 
| 21 | x | 11 | = | 231> | 
| 21 | x | 12 | = | 252> | 
| 21 | x | 13 | = | 273> | 
| 21 | x | 14 | = | 294> | 
| 21 | x | 15 | = | 315> | 
| 21 | x | 16 | = | 336> | 
| 21 | x | 17 | = | 357> | 
| 21 | x | 18 | = | 378> |