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| n | a(n) |
|---|---|
| 2 | 2 |
| 3 | 16 |
| 4 | 2 |
| 5 | 192 |
| 6 | 128 |
| 7 | 32768 |
| 8 | 4 |
| 9 | 69632 |
| 10 | 23552 |
| 11 | 25722880 |
| 12 | 425984 |
| 13 | 717895680 |
| 14 | 1051828224 |
| 15 | 217079873536 |
| 16 | 8 |
| 17 | 2270641389568 |
| 18 | 10603200512 |
| 19 | 156423849771008 |
| 20 | 950175531008 |
| 21 | 25160124578398208 |
| 22 | 385584983965696 |
| 23 | 450589122059304960 |
| 24 | 40722497536 |
| 25 | 53279734579488838656 |
[2,16,2,192,128,32768,4,69632,23552,25722880, 425984,717895680,1051828224,217079873536,8, 2270641389568,10603200512,156423849771008, 950175531008,25160124578398208,385584983965696, 450589122059304960,40722497536, 53279734579488838656] |