n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 27 |
3 | 104 |
4 | 363 |
5 | 1182 |
6 | 3653 |
7 | 10836 |
8 | 31092 |
9 | 86784 |
10 | 236640 |
11 | 632448 |
12 | 1661056 |
13 | 4296192 |
14 | 10961664 |
15 | 27630592 |
16 | 68889600 |
17 | 170065920 |
18 | 416071680 |
19 | 1009582080 |
20 | 2431254528 |
21 | 5814222848 |
22 | 13815054336 |
23 | 32629850112 |
24 | 76640681984 |
25 | 179080003584 |
26 | 416412598272 |
27 | 963876225024 |
[1,6,27,104,363,1182,3653,10836,31092,86784, 236640,632448,1661056,4296192,10961664,27630592, 68889600,170065920,416071680,1009582080, 2431254528,5814222848,13815054336,32629850112, 76640681984,179080003584,416412598272, 963876225024] |