n | a(n) |
---|---|
0 | 1 |
1 | 6 |
2 | 33 |
3 | 172 |
4 | 864 |
5 | 4224 |
6 | 20224 |
7 | 95232 |
8 | 442368 |
9 | 2031616 |
10 | 9240576 |
11 | 41680896 |
12 | 186646528 |
13 | 830472192 |
14 | 3674210304 |
15 | 16173236224 |
16 | 70866960384 |
17 | 309237645312 |
18 | 1344324763648 |
19 | 5823975653376 |
20 | 25151328485376 |
21 | 108301895335936 |
[1,6,33,172,864,4224,20224,95232,442368,2031616, 9240576,41680896,186646528,830472192,3674210304, 16173236224,70866960384,309237645312, 1344324763648,5823975653376,25151328485376, 108301895335936] |