The OEIS is supported by the many generous donors to the OEIS Foundation.
A001421 as a simple table
| n | a(n) |
|---|---|
| 0 | 1 |
| 1 | 120 |
| 2 | 83160 |
| 3 | 81681600 |
| 4 | 93699005400 |
| 5 | 117386113965120 |
| 6 | 155667030019300800 |
| 7 | 214804163196079142400 |
| 8 | 305240072216678400087000 |
| 9 | 443655767845074392936328000 |
| 10 | 656486312795713480715743268160 |
| 11 | 985646873056680684690542988249600 |
| 12 | 1497786250388951255453847206769124800 |
[1,120,83160,81681600,93699005400,117386113965120, 155667030019300800,214804163196079142400, 305240072216678400087000, 443655767845074392936328000, 656486312795713480715743268160, 985646873056680684690542988249600, 1497786250388951255453847206769124800] |