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| n | a(n) |
|---|---|
| 1 | 45684 |
| 2 | 53824 |
| 3 | 112236 |
| 4 | 246016 |
| 5 | 482560 |
| 6 | 1196836 |
| 7 | 2980712 |
| 8 | 6240004 |
| 9 | 12771684 |
| 10 | 30294016 |
| 11 | 73190688 |
| 12 | 157101156 |
| 13 | 333866808 |
| 14 | 779191396 |
| 15 | 1825996900 |
| 16 | 3991206976 |
| 17 | 8669972808 |
| 18 | 19918805956 |
| 19 | 45934641144 |
| 20 | 101485570624 |
| 21 | 223394526672 |
[45684,53824,112236,246016,482560,1196836,2980712, 6240004,12771684,30294016,73190688,157101156, 333866808,779191396,1825996900,3991206976, 8669972808,19918805956,45934641144,101485570624, 223394526672] |