n | a(n) |
---|---|
1 | 0 |
2 | 6 |
3 | 48 |
4 | 282 |
5 | 1476 |
6 | 7302 |
7 | 35016 |
8 | 164850 |
9 | 767340 |
10 | 3546366 |
11 | 16315248 |
12 | 74837802 |
13 | 342621396 |
14 | 1566620022 |
15 | 7157423256 |
16 | 32682574050 |
17 | 149184117180 |
18 | 680813718126 |
19 | 3106475197248 |
20 | 14173073072922 |
21 | 64659388538916 |
22 | 294971717255142 |
23 | 1345602571317096 |
24 | 6138257708432850 |
[0,6,48,282,1476,7302,35016,164850,767340,3546366, 16315248,74837802,342621396,1566620022,7157423256, 32682574050,149184117180,680813718126, 3106475197248,14173073072922,64659388538916, 294971717255142,1345602571317096,6138257708432850] |