n | a(n) |
---|---|
1 | 0 |
2 | 2 |
3 | 8 |
4 | 36 |
5 | 184 |
6 | 1110 |
7 | 7776 |
8 | 62216 |
9 | 559952 |
10 | 5599530 |
11 | 61594840 |
12 | 739138092 |
13 | 9608795208 |
14 | 134523132926 |
15 | 2017846993904 |
16 | 32285551902480 |
17 | 548854382342176 |
18 | 9879378882159186 |
19 | 187708198761024552 |
20 | 3754163975220491060 |
21 | 78837443479630312280 |
22 | 1734423756551866870182 |
[0,2,8,36,184,1110,7776,62216,559952,5599530, 61594840,739138092,9608795208,134523132926, 2017846993904,32285551902480,548854382342176, 9879378882159186,187708198761024552, 3754163975220491060,78837443479630312280, 1734423756551866870182] |