Tabla del 421
| 421 | X | 1 | = | 421 |
| 421 | X | 2 | = | 842 |
| 421 | X | 3 | = | 1263 |
| 421 | X | 4 | = | 1684 |
| 421 | X | 5 | = | 2105 |
| 421 | X | 6 | = | 2526 |
| 421 | X | 7 | = | 2947 |
| 421 | X | 8 | = | 3368 |
| 421 | X | 9 | = | 3789 |
| 421 | X | 10 | = | 4210 |
| 421 | X | 1 | = | 421 |
| 421 | X | 2 | = | 842 |
| 421 | X | 3 | = | 1263 |
| 421 | X | 4 | = | 1684 |
| 421 | X | 5 | = | 2105 |
| 421 | X | 6 | = | 2526 |
| 421 | X | 7 | = | 2947 |
| 421 | X | 8 | = | 3368 |
| 421 | X | 9 | = | 3789 |
| 421 | X | 10 | = | 4210 |