n | a(n) |
---|---|
0 | 1 |
1 | 4 |
2 | 12 |
3 | 48 |
4 | 144 |
5 | 576 |
6 | 1728 |
7 | 6912 |
8 | 20736 |
9 | 82944 |
10 | 248832 |
11 | 995328 |
12 | 2985984 |
13 | 11943936 |
14 | 35831808 |
15 | 143327232 |
16 | 429981696 |
17 | 1719926784 |
18 | 5159780352 |
19 | 20639121408 |
20 | 61917364224 |
21 | 247669456896 |
22 | 743008370688 |
23 | 2972033482752 |
24 | 8916100448256 |
25 | 35664401793024 |
26 | 106993205379072 |
27 | 427972821516288 |
[1,4,12,48,144,576,1728,6912,20736,82944,248832, 995328,2985984,11943936,35831808,143327232, 429981696,1719926784,5159780352,20639121408, 61917364224,247669456896,743008370688, 2972033482752,8916100448256,35664401793024, 106993205379072,427972821516288] |