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| n | a(n) |
|---|---|
| 1 | 1 |
| 2 | 1 |
| 3 | 1 |
| 4 | 4 |
| 5 | 4 |
| 6 | 4 |
| 7 | 4 |
| 8 | 16 |
| 9 | 144 |
| 10 | 144 |
| 11 | 144 |
| 12 | 576 |
| 13 | 576 |
| 14 | 576 |
| 15 | 576 |
| 16 | 9216 |
| 17 | 9216 |
| 18 | 82944 |
| 19 | 82944 |
| 20 | 331776 |
| 21 | 331776 |
| 22 | 331776 |
| 23 | 331776 |
| 24 | 1327104 |
| 25 | 33177600 |
| 26 | 33177600 |
| 27 | 298598400 |
| 28 | 1194393600 |
| 29 | 1194393600 |
| 30 | 1194393600 |
| 31 | 1194393600 |
| 32 | 19110297600 |
| 33 | 19110297600 |
| 34 | 19110297600 |
| 35 | 19110297600 |
[1,1,1,4,4,4,4,16,144,144,144,576,576,576,576, 9216,9216,82944,82944,331776,331776,331776,331776, 1327104,33177600,33177600,298598400,1194393600, 1194393600,1194393600,1194393600,19110297600, 19110297600,19110297600,19110297600] |