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| n | a(n) |
|---|---|
| 1 | 2 |
| 2 | 8 |
| 3 | 40 |
| 4 | 80 |
| 5 | 9232 |
| 6 | 9232 |
| 7 | 3280 |
| 8 | 6560 |
| 9 | 29524 |
| 10 | 59048 |
| 11 | 1276936 |
| 12 | 1276936 |
| 13 | 6810136 |
| 14 | 6810136 |
| 15 | 21523360 |
| 16 | 43046720 |
| 17 | 1570824736 |
| 18 | 1570824736 |
| 19 | 1743392200 |
| 20 | 3486784400 |
| 21 | 17651846032 |
| 22 | 31381059608 |
| 23 | 141214768240 |
| 24 | 282429536480 |
| 25 | 9161049517720 |
[2,8,40,80,9232,9232,3280,6560,29524,59048, 1276936,1276936,6810136,6810136,21523360,43046720, 1570824736,1570824736,1743392200,3486784400, 17651846032,31381059608,141214768240,282429536480, 9161049517720] |