n | a(n) |
---|---|
0 | 0 |
1 | 12 |
2 | 96 |
3 | 370 |
4 | 1654 |
5 | 6660 |
6 | 28020 |
7 | 115190 |
8 | 478786 |
9 | 1979288 |
10 | 8203968 |
11 | 33961066 |
12 | 140672814 |
13 | 582515628 |
14 | 2412508492 |
15 | 9990776222 |
16 | 41375626970 |
17 | 171349445760 |
18 | 709617513368 |
19 | 2938760897682 |
20 | 12170404119878 |
21 | 50401719145492 |
[0,12,96,370,1654,6660,28020,115190,478786, 1979288,8203968,33961066,140672814,582515628, 2412508492,9990776222,41375626970,171349445760, 709617513368,2938760897682,12170404119878, 50401719145492] |