The OEIS is supported by the many generous donors to the OEIS Foundation.
| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 4 |
| 3 | 8 |
| 4 | 36 |
| 5 | 72 |
| 6 | 128 |
| 7 | 216 |
| 8 | 1152 |
| 9 | 3456 |
| 10 | 27000 |
| 11 | 28800 |
| 12 | 86400 |
| 13 | 279936 |
| 14 | 432000 |
| 15 | 4233600 |
| 16 | 6998400 |
| 17 | 21168000 |
| 18 | 34992000 |
| 19 | 148176000 |
| 20 | 342921600 |
| 21 | 1714608000 |
| 22 | 8957952000 |
| 23 | 12002256000 |
| 24 | 197222256000 |
| 25 | 207467568000 |
| 26 | 438939648000 |
| 27 | 1071630000000 |
| 28 | 1452272976000 |
| 29 | 3072577536000 |
| 30 | 7501410000000 |
[1,4,8,36,72,128,216,1152,3456,27000,28800,86400, 279936,432000,4233600,6998400,21168000,34992000, 148176000,342921600,1714608000,8957952000, 12002256000,197222256000,207467568000, 438939648000,1071630000000,1452272976000, 3072577536000,7501410000000] |