n | a(n) |
---|---|
0 | 1 |
1 | 2 |
2 | 16 |
3 | 56 |
4 | 304 |
5 | 1280 |
6 | 6208 |
7 | 27776 |
8 | 130048 |
9 | 593408 |
10 | 2747392 |
11 | 12615680 |
12 | 58200064 |
13 | 267788288 |
14 | 1233977344 |
15 | 5681414144 |
16 | 26170556416 |
17 | 120518082560 |
18 | 555082842112 |
19 | 2556382674944 |
20 | 11773759455232 |
21 | 54224111009792 |
22 | 249733335482368 |
[1,2,16,56,304,1280,6208,27776,130048,593408, 2747392,12615680,58200064,267788288,1233977344, 5681414144,26170556416,120518082560,555082842112, 2556382674944,11773759455232,54224111009792, 249733335482368] |